qcacmn: Add hal_rx_msdu_flow_idx_get API

Implement hal_rx_msdu_flow_idx_get API
per chipset as the macro
to retrieve the flow_idx value is
chipset dependent.

Change-Id: I75131d7c048f5b67489ed25fbd52bfcf01bab782
CRs-Fixed: 2522133

hal/wifi3.0/qca8074v2/hal_8074v2_rx.h

@@ -292,6 +292,12 @@ UNIFIED_RX_MSDU_DETAILS_2_RX_MSDU_DESC_INFO_RX_MSDU_DESC_INFO_DETAILS_OFFSET))
 	 _OFFSET_TO_BYTE_PTR((link_desc),\
 	UNIFIED_RX_MSDU_LINK_8_RX_MSDU_DETAILS_MSDU_0_OFFSET))
 
+#define HAL_RX_MSDU_END_FLOW_IDX_GET(_rx_msdu_end)  \
+		(_HAL_MS((*_OFFSET_TO_WORD_PTR(_rx_msdu_end,  \
+		RX_MSDU_END_14_FLOW_IDX_OFFSET)),  \
+		RX_MSDU_END_14_FLOW_IDX_MASK,    \
+		RX_MSDU_END_14_FLOW_IDX_LSB))
+
 /*
  * hal_rx_msdu_start_nss_get_8074v2(): API to get the NSS
  * Interval from rx_msdu_start