ARM: dts: msm: Enable auto freeze feature in watchdog for mdmfermium

There is auto freeze feature in hardware where Non secure watchdog
freezes automatically when all online cores are in suspend and
unfreezes watchdog upon wakeup event from low power mode. Enable this
feature to protect suspend / resume path by Non secure watchdog.

Change-Id: I255efe5d216fa8d24e2db82c46f918f7e0c1179a
Signed-off-by: Venkatesh Yadav Abbarapu <vabbar@codeaurora.org>