soc: qcom: Move watchdog suspend/resume callbacks to syscore ops

Move suspend resume callbacks to syscore ops, to ensure that
watchdog is kept enabled while _noirq callbacks are run; to
catch any watchdog hang during these callbacks run.

Change-Id: I5ef61eb2ce2cd74a07847d6f5ff048a7b27b95a1
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Prateek Sood <prsood@codeaurora.org>