qcacld-3.0: Enable MBSSID feature

Enable MBSSID feature through compilation flag.

Change-Id: If8cdfad35bb55d201d4b90f78f57406e404edbf6
CRs-Fixed: 2382918
diff --git a/Kbuild b/Kbuild
index 3dbe6a4..e74d20b 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2021,6 +2021,8 @@
 
 cppflags-$(CONFIG_QCACLD_WLAN_LFR3) += -DWLAN_FEATURE_ROAM_OFFLOAD
 
+cppflags-$(CONFIG_WLAN_FEATURE_MBSSID) += -DWLAN_FEATURE_MBSSID
+
 cppflags-$(CONFIG_CNSS_GENL) += -DCNSS_GENL
 
 cppflags-$(CONFIG_QCACLD_WLAN_LFR2) += -DWLAN_FEATURE_HOST_ROAM