ARM: mach-nspire: Rework support and directory structure

Having a platform need a mach-* directory should be seen as a negative,
it means the platform needs special non-standard handling. ARM64 support
does not allow mach-* directories at all. While we may not get to that
given all the non-standard architectures we support, we should still try
to get as close as we can and reduce the number of mach directories.

The mach-nspire/ directory and files, provides just one "feature":
having the kernel print the machine name if the DTB does not also contain
a "model" string (which they always do). To reduce the number of mach-*
directories let's do without that feature and remove this directory.

NOTE: The default l2c_aux_mask is now ~0 but these devices never have
this type of cache controller so this is safe.
Signed-off-by: Andrew Davis <afd@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig

@@ -413,8 +413,6 @@ source "arch/arm/mach-nomadik/Kconfig"
 
 source "arch/arm/mach-npcm/Kconfig"
 
-source "arch/arm/mach-nspire/Kconfig"
-
 source "arch/arm/mach-omap1/Kconfig"
 
 source "arch/arm/mach-omap2/Kconfig"

arch/arm/Kconfig.platforms

@@ -115,6 +115,21 @@ config MACH_UC7112LX
 
 endif
 
+config ARCH_NSPIRE
+	bool "TI-NSPIRE based"
+	depends on ARCH_MULTI_V4T
+	depends on CPU_LITTLE_ENDIAN
+	select CPU_ARM926T
+	select GENERIC_IRQ_CHIP
+	select ARM_AMBA
+	select ARM_VIC
+	select ARM_TIMER_SP804
+	select NSPIRE_TIMER
+	select POWER_RESET
+	select POWER_RESET_SYSCON
+	help
+	  This enables support for systems using the TI-NSPIRE CPU
+
 config ARCH_RDA
 	bool "RDA Micro SoCs"
 	depends on ARCH_MULTI_V7

arch/arm/Makefile

@@ -200,7 +200,6 @@ machine-$(CONFIG_ARCH_MXS)		+= mxs
 machine-$(CONFIG_ARCH_MSTARV7)		+= mstar
 machine-$(CONFIG_ARCH_NOMADIK)		+= nomadik
 machine-$(CONFIG_ARCH_NPCM)		+= npcm
-machine-$(CONFIG_ARCH_NSPIRE)		+= nspire
 machine-$(CONFIG_ARCH_OMAP1)		+= omap1
 machine-$(CONFIG_ARCH_OMAP2PLUS)	+= omap2
 machine-$(CONFIG_ARCH_ORION5X)		+= orion5x

arch/arm/mach-nspire/Kconfig

-# SPDX-License-Identifier: GPL-2.0-only
-config ARCH_NSPIRE
-	bool "TI-NSPIRE based"
-	depends on ARCH_MULTI_V4T
-	depends on CPU_LITTLE_ENDIAN
-	select CPU_ARM926T
-	select GENERIC_IRQ_CHIP
-	select ARM_AMBA
-	select ARM_VIC
-	select ARM_TIMER_SP804
-	select NSPIRE_TIMER
-	select POWER_RESET
-	select POWER_RESET_SYSCON
-	help
-	  This enables support for systems using the TI-NSPIRE CPU

arch/arm/mach-nspire/Makefile

-# SPDX-License-Identifier: GPL-2.0-only
-obj-y				+= nspire.o

arch/arm/mach-nspire/nspire.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *	Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
- */
-
-#include <asm/mach/arch.h>
-
-static const char *const nspire_dt_match[] __initconst = {
-	"ti,nspire",
-	"ti,nspire-cx",
-	"ti,nspire-tp",
-	"ti,nspire-clp",
-	NULL,
-};
-
-DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
-	.dt_compat	= nspire_dt_match,
-MACHINE_END