tree d5251b30d8a618a44327a48d8174a79ef376d2e0
parent c5ce680cd3fd2eb6d4b69d4f641f49362a799dbe
author Lin Huang <hl@rock-chips.com> 1521509841 +0800
committer Caesar Wang <wxt@rock-chips.com> 1521510147 +0800

rockchip/rk3399: save/restore watchdog register correctly

there are two fix for save/restore watchdog register:
1. watchdog plck will shutdown after secure_watchdog_disable(), so need
   to save register before it and restore after secure_watchdog_enable().
2. need write 0x76 to cnt_restart to keep watchdog alive when restore
   watchdog register.

Change-Id: I1f6fbceae22186e3b72a87df6332a110adf37479
Signed-off-by: Lin Huang <hl@rock-chips.com>