ARM: mmp: mark all board files for removal

The mmp platform supports both ATAGS based board files and DT
booting, but it appears that nobody has been interested in
board files for a long time.

Mark all of them for removal in early 2023 with a dependency
on CONFIG_UNUSED_BOARD_FILES, leaving only the DT support
for the future, unless someone pops up who uses them.

Cc: Lubomir Rintel <lkundrak@v3.sk>
Cc: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/mmp2_defconfig

@@ -5,10 +5,8 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
 # CONFIG_BLK_DEV_BSG is not set
 CONFIG_ARCH_MMP=y
-CONFIG_MACH_BROWNSTONE=y
-CONFIG_MACH_FLINT=y
-CONFIG_MACH_MARVELL_JASPER=y
 CONFIG_AEABI=y
+CONFIG_MACH_MMP2_DT=y
 CONFIG_CMDLINE="root=/dev/nfs rootfstype=nfs nfsroot=192.168.1.100:/nfsroot/ ip=192.168.1.101:192.168.1.100::255.255.255.0::eth0:on console=ttyS2,38400 mem=128M user_debug=255 earlyprintk"
 CONFIG_VFP=y
 CONFIG_MODULES=y
@@ -56,6 +54,7 @@ CONFIG_BACKLIGHT_MAX8925=y
 CONFIG_MMC=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_MAX8925=y
+# CONFIG_RESET_CONTROLLER is not set
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_EXT4_FS=y

arch/arm/mach-mmp/Kconfig

@@ -18,6 +18,7 @@ if ATAGS
 config MACH_ASPENITE
 	bool "Marvell's PXA168 Aspenite Development Board"
 	depends on ARCH_MULTI_V5
+	depends on UNUSED_BOARD_FILES
 	select CPU_PXA168
 	help
 	  Say 'Y' here if you want to support the Marvell PXA168-based
@@ -26,6 +27,7 @@ config MACH_ASPENITE
 config MACH_ZYLONITE2
 	bool "Marvell's PXA168 Zylonite2 Development Board"
 	depends on ARCH_MULTI_V5
+	depends on UNUSED_BOARD_FILES
 	select CPU_PXA168
 	help
 	  Say 'Y' here if you want to support the Marvell PXA168-based
@@ -34,6 +36,7 @@ config MACH_ZYLONITE2
 config MACH_AVENGERS_LITE
 	bool "Marvell's PXA168 Avengers Lite Development Board"
 	depends on ARCH_MULTI_V5
+	depends on UNUSED_BOARD_FILES
 	select CPU_PXA168
 	help
 	  Say 'Y' here if you want to support the Marvell PXA168-based
@@ -42,6 +45,7 @@ config MACH_AVENGERS_LITE
 config MACH_TTC_DKB
 	bool "Marvell's PXA910 TavorEVB/TTC_DKB Development Board"
 	depends on ARCH_MULTI_V5
+	depends on UNUSED_BOARD_FILES
 	select CPU_PXA910
 	help
 	  Say 'Y' here if you want to support the Marvell PXA910-based
@@ -50,6 +54,7 @@ config MACH_TTC_DKB
 config MACH_BROWNSTONE
 	bool "Marvell's Brownstone Development Platform"
 	depends on ARCH_MULTI_V7
+	depends on UNUSED_BOARD_FILES
 	select CPU_MMP2
 	help
 	  Say 'Y' here if you want to support the Marvell MMP2-based
@@ -61,6 +66,7 @@ config MACH_BROWNSTONE
 config MACH_FLINT
 	bool "Marvell's Flint Development Platform"
 	depends on ARCH_MULTI_V7
+	depends on UNUSED_BOARD_FILES
 	select CPU_MMP2
 	help
 	  Say 'Y' here if you want to support the Marvell MMP2-based
@@ -72,6 +78,7 @@ config MACH_FLINT
 config MACH_MARVELL_JASPER
 	bool "Marvell's Jasper Development Platform"
 	depends on ARCH_MULTI_V7
+	depends on UNUSED_BOARD_FILES
 	select CPU_MMP2
 	help
 	  Say 'Y' here if you want to support the Marvell MMP2-base
@@ -83,6 +90,7 @@ config MACH_MARVELL_JASPER
 config MACH_TETON_BGA
 	bool "Marvell's PXA168 Teton BGA Development Board"
 	depends on ARCH_MULTI_V5
+	depends on UNUSED_BOARD_FILES
 	select CPU_PXA168
 	help
 	  Say 'Y' here if you want to support the Marvell PXA168-based
@@ -91,6 +99,7 @@ config MACH_TETON_BGA
 config MACH_GPLUGD
 	bool "Marvell's PXA168 GuruPlug Display (gplugD) Board"
 	depends on ARCH_MULTI_V5
+	depends on UNUSED_BOARD_FILES
 	select CPU_PXA168
 	help
 	  Say 'Y' here if you want to support the Marvell PXA168-based