qcacmn: Add hal_rx_is_unicast API

Implement hal_rx_is_unicase API based
on the chipset as the macro to retrieve
is_unicast bit value is chipset dependent.

Change-Id: I38807f478c295309adf2a07ce9010b1bc04c734e
CRs-Fixed: 2522133

hal/wifi3.0/hal_internal.h

@@ -405,6 +405,7 @@ struct hal_hw_txrx_ops {
 	QDF_STATUS
 		(*hal_rx_mpdu_get_addr4)(uint8_t *buf, uint8_t *mac_addr);
 	uint8_t (*hal_rx_get_mpdu_sequence_control_valid)(uint8_t *buf);
+	bool (*hal_rx_is_unicast)(uint8_t *buf);
 };
 
 /**