wcnss: dump apb2phy_status register on subsystem restart

apb2phy_status register is required for debugging certain
issues due to watchdog bite on the wcn chip. Dump the
register when watchdog bite occurs on the wcn subsystem
or the subsystem is going for a restart for any other
reason.

Change-Id: I90851d023dff5c62d66a9855fff9b16d244f5190
CRs-Fixed: 631088
Signed-off-by: Mihir Shete <smihir@codeaurora.org>