Select `CONFIG_ROCKCHIP_SARADC=y` to enable Rockchip SAR ADC
Add ADC Ladder Buttons driver as a kernel module as well as `kmod-button-hotplug` to the list of
default packages for Rockchip targets that have buttons connected to ADC, not including some
devices (e.g. NanoPi R76S) that have ADC buttons which are not in the device tree.
This is needed to use buttons on Rockchip devices that are connected to ADC and not GPIO
Tested on FriendlyELEC NanoPi M5
Signed-off-by: Ryan Leung <untilscour@protonmail.com>
Link: https://github.com/openwrt/openwrt/pull/23008
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
e13cbab684