qcacmn: Handle raw frames and invalid flow_idx stats

Make sure to drop the raw Rx frames as both driver and stack
are not expected to handle them.
Add counter for invalid fisa flow_idx packet received.

Change-Id: I5107c554b8ce6a9a7973f2aeca44bb0f360dc2df
CRs-Fixed: 2733981

dp/wifi3.0/dp_stats.c

@@ -6049,6 +6049,8 @@ void dp_txrx_path_stats(struct dp_soc *soc)
 			       pdev->soc->stats.rx.err.reo_err_oor_drop);
 		DP_PRINT_STATS("Rx err msdu rejected: %d",
 			       soc->stats.rx.err.rejected);
+		DP_PRINT_STATS("Rx raw frame dropped: %d",
+			       soc->stats.rx.err.raw_frm_drop);
 
 		DP_PRINT_STATS("Reo Statistics");
 		DP_PRINT_STATS("near_full: %u ", soc->stats.rx.near_full);