qcacmn: Avoid invalid access to umac register when runtime suspend

When txrx_stats 28 is issued we post messages to reo command ring
to receive reo queue stats on the reo status ring.
This leads to acces accessing reo_cmd_ring head pointer shadow
register when runtime pm is suspended. Perform
a hif_pm_runtime_get to resume the apps before accessing
the shadow register.

Change-Id: Ie6df817fc114bd4c8ba7783df1fe3bd770deec40
CRs-Fixed: 2544174
1 file changed