soc: qcom: watchdog_v2: Save the watchdog data and state

Store the watchdog data and the state of watchdog which will be helpful
for debugging watchdog bark scenarios.

Change-Id: I21afad08c675c7b9e50fb0a4eff9a7fef74c13cd
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>