ARM: ep93xx: mark most board files as unused

Most of the remaining ARM board files in the kernel have no known users,
and we plan to remove those in early 2023.

For ep93xx, Alexander Sverdlin still has access to the edb93xx family
of reference boards, while Nikita Shubin has a ts7250 and is working on
a device tree conversion for those. Hartley Sweeten has a
MACH_VISION_EP9307 that is still in use.

This is a total of nine machine definitions that we will keep
around, but these are all similar machines and are defined in only
two board files. The other six board files now have a dependency on
CONFIG_UNUSED_BOARD_FILES to indicate that they are likely going away.

Cc: Nikita Shubin <nikita.shubin@maquefel.me>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Cc: Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/ep93xx_defconfig

@@ -8,7 +8,6 @@ CONFIG_EXPERT=y
 CONFIG_ARCH_MULTI_V4T=y
 # CONFIG_ARCH_MULTI_V7 is not set
 CONFIG_ARCH_EP93XX=y
-CONFIG_MACH_ADSSPHERE=y
 CONFIG_MACH_EDB9301=y
 CONFIG_MACH_EDB9302=y
 CONFIG_MACH_EDB9302A=y
@@ -17,13 +16,6 @@ CONFIG_MACH_EDB9307A=y
 CONFIG_MACH_EDB9312=y
 CONFIG_MACH_EDB9315=y
 CONFIG_MACH_EDB9315A=y
-CONFIG_MACH_GESBC9312=y
-CONFIG_MACH_MICRO9H=y
-CONFIG_MACH_MICRO9M=y
-CONFIG_MACH_MICRO9L=y
-CONFIG_MACH_MICRO9S=y
-CONFIG_MACH_SIM_ONE=y
-CONFIG_MACH_SNAPPER_CL15=y
 CONFIG_MACH_TS72XX=y
 CONFIG_MACH_VISION_EP9307=y
 CONFIG_AEABI=y

arch/arm/mach-ep93xx/Kconfig

@@ -27,6 +27,7 @@ comment "EP93xx Platforms"
 
 config MACH_ADSSPHERE
 	bool "Support ADS Sphere"
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the ADS
 	  Sphere board.
@@ -99,6 +100,7 @@ config MACH_EDB9315A
 
 config MACH_GESBC9312
 	bool "Support Glomation GESBC-9312-sx"
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the Glomation
 	  GESBC-9312-sx board.
@@ -109,6 +111,7 @@ config MACH_MICRO9
 config MACH_MICRO9H
 	bool "Support Contec Micro9-High"
 	select MACH_MICRO9
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the
 	  Contec Micro9-High board.
@@ -116,6 +119,7 @@ config MACH_MICRO9H
 config MACH_MICRO9M
 	bool "Support Contec Micro9-Mid"
 	select MACH_MICRO9
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the
 	  Contec Micro9-Mid board.
@@ -123,6 +127,7 @@ config MACH_MICRO9M
 config MACH_MICRO9L
 	bool "Support Contec Micro9-Lite"
 	select MACH_MICRO9
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the
 	  Contec Micro9-Lite board.
@@ -130,18 +135,21 @@ config MACH_MICRO9L
 config MACH_MICRO9S
 	bool "Support Contec Micro9-Slim"
 	select MACH_MICRO9
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the
 	  Contec Micro9-Slim board.
 
 config MACH_SIM_ONE
         bool "Support Simplemachines Sim.One board"
+	depends on UNUSED_BOARD_FILES
         help
           Say 'Y' here if you want your kernel to support the
           Simplemachines Sim.One board.
 
 config MACH_SNAPPER_CL15
 	bool "Support Bluewater Systems Snapper CL15 Module"
+	depends on UNUSED_BOARD_FILES
 	help
 	  Say 'Y' here if you want your kernel to support the Bluewater
 	  Systems Snapper CL15 Module.