prima: HDD: Serialize NAN commands in sme

If scan is in progress, donot send any NAN commands to firmware.
Push the command to SME queue which blocks the command until
the scan finishes.

Change-Id: I80d04b15e378b2db875e3ccfafd5eda0208db485
CRs-Fixed: 797391
diff --git a/CORE/SME/inc/smeInside.h b/CORE/SME/inc/smeInside.h
index f0222d3..b3ceae4 100644
--- a/CORE/SME/inc/smeInside.h
+++ b/CORE/SME/inc/smeInside.h
@@ -229,6 +229,7 @@
         tSirPNOScanReq pnoInfo;
         tSirSpoofMacAddrReq macAddrSpoofCmd;
         tAniGetFrameLogReq getFramelogCmd;
+        tpNanRequest pNanReq;
     }u;
 }tSmeCmd;