ARM: select legacy gpiolib interfaces where used

A few old machines have not been converted away from the old-style
gpiolib interfaces. Make these select the new CONFIG_GPIOLIB_LEGACY
symbol so the code still works where it is needed but can be left
out otherwise.

Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20260428162757.540823-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-mv78xx0/Kconfig

@@ -6,6 +6,7 @@ menuconfig ARCH_MV78XX0
 	depends on ATAGS
 	select CPU_FEROCEON
 	select GPIOLIB
+	select GPIOLIB_LEGACY
 	select MVEBU_MBUS
 	select FORCE_PCI
 	select PLAT_ORION_LEGACY

arch/arm/mach-orion5x/Kconfig

@@ -5,6 +5,7 @@ menuconfig ARCH_ORION5X
 	depends on CPU_LITTLE_ENDIAN
 	select CPU_FEROCEON
 	select GPIOLIB
+	select GPIOLIB_LEGACY
 	select MVEBU_MBUS
 	select FORCE_PCI
 	select PCI_QUIRKS

arch/arm/mach-pxa/Kconfig

@@ -10,6 +10,7 @@ menuconfig ARCH_PXA
 	select CPU_XSCALE if !CPU_XSC3
 	select GPIO_PXA
 	select GPIOLIB
+	select GPIOLIB_LEGACY
 	select PLAT_PXA
 	help
 	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.

arch/arm/mach-s3c/Kconfig.s3c64xx

@@ -101,6 +101,7 @@ config MACH_WLF_CRAGG_6410
 	depends on ATAGS
 	depends on I2C=y
 	select CPU_S3C6410
+	select GPIOLIB_LEGACY
 	select LEDS_GPIO_REGISTER
 	select S3C64XX_DEV_SPI0
 	select S3C64XX_SETUP_FB_24BPP

arch/arm/mach-sa1100/Kconfig

@@ -13,6 +13,7 @@ menuconfig ARCH_SA1100
 	select CPU_FREQ
 	select CPU_SA1100
 	select GPIOLIB
+	select GPIOLIB_LEGACY
 	select IRQ_DOMAIN
 	select ISA
 	select NEED_MACH_MEMORY_H