msm: wcnss: Dump PMIC regulator contol registers

Dump PMIC registers which are related to WCNSS(RIVA)during the
WCNSS SSR or WDI timeout.  This  information helps to check PMIC
status during the SSR. This allows to debug multiple crash issues,
where WCNSS SSR dumps are insufficient to conclude why FIQ is not
reaching the WCNSS from HOST and why SPM is stuck.

CRs-fixed: 487483
Change-Id: I14bae1d0e99d5345b298c97917b23d246f0fef25
Signed-off-by: Naresh Jayaram <njayar@codeaurora.org>