rockchip: use downstream GPIO button implementation

Use the OpenWrt netlink GPIO button implementation to forward button
presses to procd. This is necessary to make failsafe-mode access
using a button possible.

Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/rockchip/Makefile

@@ -17,7 +17,7 @@ endef
 
 include $(INCLUDE_DIR)/target.mk
 
-DEFAULT_PACKAGES += uboot-envtools partx-utils e2fsprogs mkf2fs
+DEFAULT_PACKAGES += uboot-envtools partx-utils e2fsprogs mkf2fs kmod-gpio-button-hotplug
 
 KERNELNAME:=Image dtbs
 

target/linux/rockchip/armv8/config-5.4

@@ -221,7 +221,6 @@ CONFIG_KALLSYMS=y
 CONFIG_KEXEC_CORE=y
 CONFIG_KEXEC_FILE=y
 # CONFIG_KEXEC_SIG is not set
-CONFIG_KEYBOARD_GPIO=y
 CONFIG_KSM=y
 # CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
 CONFIG_LEDS_GPIO=y