wlan: Add firmware capability of SAP flow control

Add feature SAP flow control capability to indicate firmware
that host supports the feature during host firmware features
capability exchange.

Change-Id: Ib554580b712feeec802f817ad11f1b1866c54db6
CRs-Fixed: 1097660
diff --git a/CORE/MAC/src/include/sirParams.h b/CORE/MAC/src/include/sirParams.h
index 203dbb0..69a9cda 100644
--- a/CORE/MAC/src/include/sirParams.h
+++ b/CORE/MAC/src/include/sirParams.h
@@ -150,6 +150,7 @@
     * SAP DNS offload.
     */
    SAP_OFFLOADS = 65,
+   SAP_BUFF_ALLOC = 66,
    //MAX_FEATURE_SUPPORTED = 128
 } placeHolderInCapBitmap;