pinctrl: mediatek: Adjust mt8173 pinctrl kconfig

ARM64 maintainer doesn't want to add MACH_* for each SoC.
Adjust mt8173 pinctrl kconfig entry so user can manually select it.

Also make PINCTRL_MT8135 selectable when COMPILE_TEST is enabled.
Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/Kconfig

-if ARCH_MEDIATEK
+if ARCH_MEDIATEK || COMPILE_TEST
 
 config PINCTRL_MTK_COMMON
 	bool
@@ -7,12 +7,17 @@ config PINCTRL_MTK_COMMON
 	select GPIOLIB
 	select OF_GPIO
 
+# For ARMv7 SoCs
 config PINCTRL_MT8135
-	def_bool MACH_MT8135
+	bool "Mediatek MT8135 pin control" if COMPILE_TEST && !MACH_MT8135
+	default MACH_MT8135
 	select PINCTRL_MTK_COMMON
 
+# For ARMv8 SoCs
 config PINCTRL_MT8173
-	def_bool MACH_MT8173
+	bool "Mediatek MT8173 pin control"
+	depends on ARM64 || COMPILE_TEST
+	default ARM64 && ARCH_MEDIATEK
 	select PINCTRL_MTK_COMMON
 
 endif