fmc: remove left-over ipmi-fru.h after fmc deletion

Commit 6a80b300 ("fmc: Delete the FMC subsystem") from Linus Walleij
deleted the obsolete FMC subsystem, but missed the MAINTAINERS entry and
include/linux/ipmi-fru.h mentioned in the MAINTAINERS entry.

Later, commit d5d4aa1e ("MAINTAINERS: Remove FMC subsystem") from
Denis Efremov cleaned up the MAINTAINERS entry, but actually also missed
that include/linux/ipmi-fru.h should also be deleted while deleting its
reference in MAINTAINERS.

So, deleting include/linux/ipmi-fru.h slipped through the previous
clean-ups.

As there is no further use for include/linux/ipmi-fru.h, finally delete
include/linux/ipmi-fru.h for good now.

Fixes: d5d4aa1e ("MAINTAINERS: Remove FMC subsystem")
Fixes: 6a80b300 ("fmc: Delete the FMC subsystem")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20191214114913.8610-1-lukas.bulwahn@gmail.comAcked-by: Federico Vaga <federico.vaga@cern.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

include/linux/ipmi-fru.h

-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (C) 2012 CERN (www.cern.ch)
- * Author: Alessandro Rubini <rubini@gnudd.com>
- *
- * This work is part of the White Rabbit project, a research effort led
- * by CERN, the European Institute for Nuclear Research.
- */
-#ifndef __LINUX_IPMI_FRU_H__
-#define __LINUX_IPMI_FRU_H__
-#ifdef __KERNEL__
-#  include <linux/types.h>
-#  include <linux/string.h>
-#else
-#  include <stdint.h>
-#  include <string.h>
-#endif
-
-/*
- * These structures match the unaligned crap we have in FRU1011.pdf
- * (http://download.intel.com/design/servers/ipmi/FRU1011.pdf)
- */
-
-/* chapter 8, page 5 */
-struct fru_common_header {
-	uint8_t format;			/* 0x01 */
-	uint8_t internal_use_off;	/* multiple of 8 bytes */
-	uint8_t chassis_info_off;	/* multiple of 8 bytes */
-	uint8_t board_area_off;		/* multiple of 8 bytes */
-	uint8_t product_area_off;	/* multiple of 8 bytes */
-	uint8_t multirecord_off;	/* multiple of 8 bytes */
-	uint8_t pad;			/* must be 0 */
-	uint8_t checksum;		/* sum modulo 256 must be 0 */
-};
-
-/* chapter 9, page 5 -- internal_use: not used by us */
-
-/* chapter 10, page 6 -- chassis info: not used by us */
-
-/* chapter 13, page 9 -- used by board_info_area below */
-struct fru_type_length {
-	uint8_t type_length;
-	uint8_t data[0];
-};
-
-/* chapter 11, page 7 */
-struct fru_board_info_area {
-	uint8_t format;			/* 0x01 */
-	uint8_t area_len;		/* multiple of 8 bytes */
-	uint8_t language;		/* I hope it's 0 */
-	uint8_t mfg_date[3];		/* LSB, minutes since 1996-01-01 */
-	struct fru_type_length tl[0];	/* type-length stuff follows */
-
-	/*
-	 * the TL there are in order:
-	 * Board Manufacturer
-	 * Board Product Name
-	 * Board Serial Number
-	 * Board Part Number
-	 * FRU File ID (may be null)
-	 * more manufacturer-specific stuff
-	 * 0xc1 as a terminator
-	 * 0x00 pad to a multiple of 8 bytes - 1
-	 * checksum (sum of all stuff module 256 must be zero)
-	 */
-};
-
-enum fru_type {
-	FRU_TYPE_BINARY		= 0x00,
-	FRU_TYPE_BCDPLUS	= 0x40,
-	FRU_TYPE_ASCII6		= 0x80,
-	FRU_TYPE_ASCII		= 0xc0, /* not ascii: depends on language */
-};
-
-/*
- * some helpers
- */
-static inline struct fru_board_info_area *fru_get_board_area(
-	const struct fru_common_header *header)
-{
-	/* we know for sure that the header is 8 bytes in size */
-	return (struct fru_board_info_area *)(header + header->board_area_off);
-}
-
-static inline int fru_type(struct fru_type_length *tl)
-{
-	return tl->type_length & 0xc0;
-}
-
-static inline int fru_length(struct fru_type_length *tl)
-{
-	return (tl->type_length & 0x3f) + 1; /* len of whole record */
-}
-
-/* assume ascii-latin1 encoding */
-static inline int fru_strlen(struct fru_type_length *tl)
-{
-	return fru_length(tl) - 1;
-}
-
-static inline char *fru_strcpy(char *dest, struct fru_type_length *tl)
-{
-	int len = fru_strlen(tl);
-	memcpy(dest, tl->data, len);
-	dest[len] = '\0';
-	return dest;
-}
-
-static inline struct fru_type_length *fru_next_tl(struct fru_type_length *tl)
-{
-	return tl + fru_length(tl);
-}
-
-static inline int fru_is_eof(struct fru_type_length *tl)
-{
-	return tl->type_length == 0xc1;
-}
-
-/*
- * External functions defined in fru-parse.c.
- */
-extern int fru_header_cksum_ok(struct fru_common_header *header);
-extern int fru_bia_cksum_ok(struct fru_board_info_area *bia);
-
-/* All these 4 return allocated strings by calling fru_alloc() */
-extern char *fru_get_board_manufacturer(struct fru_common_header *header);
-extern char *fru_get_product_name(struct fru_common_header *header);
-extern char *fru_get_serial_number(struct fru_common_header *header);
-extern char *fru_get_part_number(struct fru_common_header *header);
-
-/* This must be defined by the caller of the above functions */
-extern void *fru_alloc(size_t size);
-
-#endif /* __LINUX_IMPI_FRU_H__ */