Add S0_SCP_AUTH_FAIL, S1_SCP_AUTH_FAIL gpios to indicates firmware
authentication fail on each socket.

Add gpio RTC_BAT_SEN_EN to enable RTC battery adc sensor.

Add BMC_I2C4_O_EN gpio to go high at boot to enable access to I2C4 bus.
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Signed-off-by: Thang Nguyen <thang@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20210917082945.19111-1-quan@os.amperecomputing.comSigned-off-by: Joel Stanley <joel@jms.id.au>