The Volume Down & Power buttons are controlled by the PMIC via
the PON hardware, and the Volume Up is connected to a PMIC gpio.

Enable the necessary hardware and setup the GPIO state for the
Volume Up gpio key.
Signed-off-by: Hui Liu <quic_huliu@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240311-gpio-keys-v5-1-08823582f6c9@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>