qcacld-3.0: Add kernel version check to avoid compilation issues

The structure ieee80211_eht_operation is not present in older kernels.
So, add a kernel version check to avoid compilation failure in targets
which use older kernels.

Change-Id: Id5e5d80e06e783258374465514246cfde9d86177
CRs-Fixed: 3627213

core/hdd/inc/wlan_hdd_assoc.h

@@ -203,7 +203,8 @@ struct hdd_connection_info {
 #ifdef WLAN_FEATURE_11BE_MLO
 	int32_t ieee_link_id;
 #endif
-#ifdef WLAN_FEATURE_11BE
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 18, 0)) && \
+	defined(WLAN_FEATURE_11BE)
 	struct ieee80211_eht_operation eht_operation;
 	uint32_t eht_oper_len;
 #endif