qcacmn: Add support for QCA6490

Add the following support for QCA6490:
1. Initialize the qca6490_hal_hw_txrx_ops
2. Initialize the hw_srng_table
3. Attach hal_qca6490_attach

Change-Id: Ic53c520ef804eb4fbe1434c704e9040c83011d3d
CRs-Fixed: 2522133
diff --git a/hal/wifi3.0/hal_srng.c b/hal/wifi3.0/hal_srng.c
index 26bd16e..382246d 100644
--- a/hal/wifi3.0/hal_srng.c
+++ b/hal/wifi3.0/hal_srng.c
@@ -33,6 +33,9 @@
 #ifdef QCA_WIFI_QCA6390
 void hal_qca6390_attach(struct hal_soc *hal);
 #endif
+#ifdef QCA_WIFI_QCA6490
+void hal_qca6490_attach(struct hal_soc *hal);
+#endif
 #ifdef QCA_WIFI_QCN9000
 void hal_qcn9000_attach(struct hal_soc *hal);
 #endif
@@ -246,6 +249,12 @@
 		hal_qca6390_attach(hal);
 	break;
 #endif
+#ifdef QCA_WIFI_QCA6490
+	case TARGET_TYPE_QCA6490:
+		hal->use_register_windowing = true;
+		hal_qca6490_attach(hal);
+	break;
+#endif
 #if defined(QCA_WIFI_QCA8074) && defined(WIFI_TARGET_TYPE_3_0)
 	case TARGET_TYPE_QCA8074:
 		hal_qca8074_attach(hal);