qcacld-3.0: Update the usage of INI entry 'gWlanMccToSccSwitchMode'

Update the usage of INI entry 'gWlanMccToSccSwitchMode' to reflect
the new options available to avoid MCC condition.

Change-Id: I866393f9df8b266eaeb7e027eb30aa5759b9d832
CRs-Fixed: 1034298

config/WCNSS_qcom_cfg.ini

@@ -370,8 +370,10 @@ gEnableMCCMode=1
 # MCC to SCC Switch mode:
 # 0-Disable
 # 1-Enable
-# 2-Force SCC if same band
+# 2-Force SCC if same band, with SAP restart
 # 3-Force SCC if same band, without SAP restart by sending (E)CSA
+# 4-Force SCC if same band (or) use SAP mandatory channel for DBS,
+#   without SAP restart by sending (E)CSA
 gWlanMccToSccSwitchMode = 0
 
 # 1=enable STBC; 0=disable STBC