qcacmn: Add macro to check the phymode is EHT

Add macro to check the phymode is EHT when
WLAN_FEATURE_11BE not defined

Change-Id: If6ae8829c21d7cbed1740aa2f637f4b90dea1a3d
CRs-Fixed: 3546219

umac/cmn_services/inc/wlan_cmn.h

@@ -549,6 +549,8 @@ enum wlan_phymode {
 	((mode) == WLAN_PHYMODE_11AXG_HE40)  || \
 	((mode) == WLAN_PHYMODE_11AXG_HE40PLUS)  || \
 	((mode) == WLAN_PHYMODE_11AXG_HE40MINUS); })
+
+#define IS_WLAN_PHYMODE_EHT(_mode) 0
 #endif
 
 #define IS_WLAN_PHYMODE_HT(_mode) ({typeof(_mode) mode = (_mode); \