qcacmn: Add hal_rx_msdu_end_l3_hdr_padding_get API

Implement hal_rx_msdu_end_l3_hdr_padding_get API
based on the chipset as the macro to retrieve
sa_idx value is chipset dependent.

Change-Id: Ice1fc2d70e339dc1d80fa6f34f37c5a7aa074be5
CRs-Fixed: 2522133

hal/wifi3.0/qca6390/hal_6390_rx.h

@@ -59,6 +59,12 @@
 		RX_MSDU_END_13_SA_IDX_MASK,		\
 		RX_MSDU_END_13_SA_IDX_LSB))
 
+#define HAL_RX_MSDU_END_L3_HEADER_PADDING_GET(_rx_msdu_end)	\
+	(_HAL_MS((*_OFFSET_TO_WORD_PTR(_rx_msdu_end,		\
+		RX_MSDU_END_5_L3_HEADER_PADDING_OFFSET)),	\
+		RX_MSDU_END_5_L3_HEADER_PADDING_MASK,		\
+		RX_MSDU_END_5_L3_HEADER_PADDING_LSB))
+
 #define HAL_RX_MSDU_START_MIMO_SS_BITMAP(_rx_msdu_start)\
 	(_HAL_MS((*_OFFSET_TO_WORD_PTR((_rx_msdu_start),\
 	RX_MSDU_START_5_MIMO_SS_BITMAP_OFFSET)),	\