qcacld-3.0: Return supported max tx groups for all HIFs

Return max tx groups supported in driver for all HIF types.
Earlier max tx group was being returned for SDIO only.

Change-Id: Id0431b03b89945386dd0f5aa0fe01b6d66fadde2
CRs-fixed: 2268757

core/dp/txrx/ol_tx_queue.c

@@ -1985,11 +1985,7 @@ void ol_tx_set_peer_group_ptr(
 
 u_int32_t ol_tx_get_max_tx_groups_supported(struct ol_txrx_pdev_t *pdev)
 {
-#ifdef HIF_SDIO
 		return OL_TX_MAX_TXQ_GROUPS;
-#else
-		return 0;
-#endif
 }
 #endif /* FEATURE_HL_GROUP_CREDIT_FLOW_CONTROL */