WLAN has a requirement to trigger a PBS sequence for XO
calibration for factory testing. As part of this feature
expose a new register under PMK8550 SDAM2, which will
be used by PBS for reading XO trims settings.
Change-Id: I620b2d9d0ca6b7452f693ff665ddf995f17e4e2c
Signed-off-by: Kamal Wadhwa <quic_kamalw@quicinc.com>