mondrianwifi: Fix external sdcard / usb-otg storage

Change-Id: I926396e52fe2f5146c774a8a74e91427bcfc63e3
mondrianwifi: Fix APP_SWITCH capacitive key

Change-Id: I2b2c69c428a7473e28c19f2797cde2847c272990
mondrianwifi: power: Turn gpio keys on and off

Change-Id: Ia670e373de0eb3d5eb28884c435b1c82525b531c