[POWERPC] Abolish powerpc_flash_init()

powerpc_flash_init() implements a broken way of probing for flash
devices supported by the physmap_of driver.  It finds all nodes in the
device tree with device_type=="rom" and instantiates of_platform
devices for them.  This is fundamentally incompatible with the normal
and correct way of probing for of_platform_bus_probe().  Platforms
which relied on powerpc_flash_init()s behaviour (none are in-tree)
will have to update their platform probing code to correctly probe
busses containing flash devices.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/sysdev/Makefile

@@ -28,7 +28,6 @@ endif
 
 # Temporary hack until we have migrated to asm-powerpc
 ifeq ($(ARCH),powerpc)
-obj-$(CONFIG_MTD)		+= rom.o
 obj-$(CONFIG_CPM2)		+= cpm2_common.o cpm2_pic.o
 obj-$(CONFIG_8xx)		+= mpc8xx_pic.o commproc.o
 obj-$(CONFIG_UCODE_PATCH)	+= micropatch.o

arch/powerpc/sysdev/rom.c

-/*
- * ROM device registration
- *
- * (C) 2006 MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/kernel.h>
-#include <asm/of_device.h>
-#include <asm/of_platform.h>
-
-static int __init powerpc_flash_init(void)
-{
-	struct device_node *node = NULL;
-
-	/*
-	 * Register all the devices which type is "rom"
-	 */
-	while ((node = of_find_node_by_type(node, "rom")) != NULL) {
-		if (node->name == NULL) {
-			printk(KERN_WARNING "powerpc_flash_init: found 'rom' "
-				"device, but with no name, skipping...\n");
-			continue;
-		}
-		of_platform_device_create(node, node->name, NULL);
-	}
-	return 0;
-}
-
-arch_initcall(powerpc_flash_init);