power/mt8183: Re-enable watchdog interrupt after sysjump
power/mt8183: Re-enable watchdog interrupt after sysjump

Without this, watchdog reset is not detected properly by the EC
after software sync.

BRANCH=none
BUG=b:132938532
TEST=Boot kukui with SW sync enabled
     stop daisydog
     echo 1 > /dev/watchdog
     Board reboots after ~30 seconds (and does not get stuck)

Change-Id: Ia33f5f2b2b610d921ef36874226d23ed09b2f793
Signed-off-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1663542
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec