aarch64: add support for rtc hwclock (#167)

Add support for UEFI RTC hardware clock.
Without this change, the docker images cannot be pulled because hwclock does not have any clock source on KVM.

Author: mergify[bot]

kernel/config-5.10.x-aarch64

@@ -4578,7 +4578,7 @@ CONFIG_RTC_I2C_AND_SPI=y
 # CONFIG_RTC_DRV_DS1685_FAMILY is not set
 # CONFIG_RTC_DRV_DS1742 is not set
 # CONFIG_RTC_DRV_DS2404 is not set
-# CONFIG_RTC_DRV_EFI is not set
+CONFIG_RTC_DRV_EFI=y
 # CONFIG_RTC_DRV_STK17TA8 is not set
 # CONFIG_RTC_DRV_M48T86 is not set
 # CONFIG_RTC_DRV_M48T35 is not set