qcacmn: Add WBM2SW4 support

To support IPA TX two pipes, WBM2SW4 is added as second WBM2IPA TX
transfer ring.

Change-Id: Id0762003c1d91e3614b15df2bc51f90e27add43c
CRs-Fixed: 2750073

hal/wifi3.0/qca6390/hal_6390.c

@@ -1491,7 +1491,11 @@ struct hal_hw_srng_config hw_srng_table_6390[] = {
 	},
 	{ /* WBM2SW_RELEASE */
 		.start_ring_id = HAL_SRNG_WBM2SW0_RELEASE,
+#ifdef IPA_WDI3_TX_TWO_PIPES
+		.max_rings = 5,
+#else
 		.max_rings = 4,
+#endif
 		.entry_size = sizeof(struct wbm_release_ring) >> 2,
 		.lmac_ring = FALSE,
 		.ring_dir = HAL_SRNG_DST_RING,