HID: HID_APPLETB_BL should depend on X86

The Apple Touch Bar is only present on x86 MacBook Pros.  Hence add a
dependency on X86, to prevent asking the user about this driver when
configuring a kernel for a different architecture.

Fixes: 1fd41e5 ("HID: hid-appletb-bl: add driver for the backlight of Apple Touch Bars")
Signed-off-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Aditya Garg <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

Author: geertu

drivers/hid/Kconfig

@@ -151,6 +151,7 @@ config HID_APPLEIR
 config HID_APPLETB_BL
 	tristate "Apple Touch Bar Backlight"
 	depends on BACKLIGHT_CLASS_DEVICE
+	depends on X86 || COMPILE_TEST
 	help
 	  Say Y here if you want support for the backlight of Touch Bars on x86
 	  MacBook Pros.