wcnss: Add TXP_STATUS register to the register logging list

Log TXP_STATUS register for debugging purpose. Also log SAW2_SPM_STS
register before Pronto common SS being collapsed as it resides within
the Pronto TOP domain.

CRs-fixed: 572661
Change-Id: I81364bf69b2e8bbaee77e1692c1e5b6153385898
Signed-off-by: Yue Ma <yuem@codeaurora.org>