wlan: OBSS scan not initiated while roaming from HT20 to HT40 on 2G

- OBSS start Scan is not triggered when roaming from HT40 to HT20
on 2.4Ghz band.
- Wrong sessionId sent from SME to PE which is causing
to pick incorrect channel bonding mode and OBSS scan is not initiated.

Change-Id: I5695520877ecd6bf228d87c05a5074120aa2293b
CRs-Fixed: 640513
diff --git a/CORE/MAC/inc/sirApi.h b/CORE/MAC/inc/sirApi.h
index b9660a2..a8b677b 100644
--- a/CORE/MAC/inc/sirApi.h
+++ b/CORE/MAC/inc/sirApi.h
@@ -4368,7 +4368,7 @@
 {
    tANI_U16               messageType;
    tANI_U16               length;
-   tANI_U8                seesionId;
+   tSirMacAddr            peerMacAddr;
 } tSirSmeHT40OBSSScanInd, *tpSirSmeHT40OBSSScanInd;
 
 typedef struct sSirHT40OBSSScanInd