1. Add standard rtc driver. 2. Add rtc misc driver for additional support. 3. Add 32k control function. 4. Add power-on alarm support. MTK-Commit-Id: f3e881935a461ec8f1fe4839855e425e4cd18a8f Change-Id: I4755fd5e2af6acd41248208515a8165585df1ae9 Signed-off-by: Ran Bi <ran.bi@mediatek.com> CR-Id: ALPS04683963 Feature: RTC-Power Drop Auto Reboot