soc: qcom: watchdog_v2: correct comments for boot parameters

Watchdog driver is renamed recently which has changed signature for all
boot paramters within the driver. Modify the comments to reflect correct
boot parameters.

Change-Id: Id81d56d874132965b21d6dd758d7f9f07be1f276
Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>