qcacld-3.0: Populate stats_mask when requesting stats
wma_get_stats_req does not populate the requested statistics bitmask
before forwarding the request to WMI. Popluate the given statistics
bitmask into the WMI request in wma_get_stats_req, so firmware can
provide the desired statistics.
Change-Id: I6dbf7bf1fb2cf6b20bcd4f2fb91f9add5dd3d779
CRs-Fixed: 2075379