qcacmn: Add support for NSS configurability

qcacld-2.0 to qcacld-3.0 propagation

Add support for NSS configurability per vdev type.
- Configure the 2g and 5g NSS with the INI value of
each vdev type
- Program the HT and VHT IE to FW for 1x1 and 2x2 mode,
FW will include them in scan probe request frames

Change-Id: I5cbf17a14ab6becad6cf5765ae5039fc284dc309
CRs-Fixed: 869026

wmi_unified_param.h

@@ -288,6 +288,8 @@ struct vdev_create_params {
 	uint8_t if_id;
 	uint32_t type;
 	uint32_t subtype;
+	uint8_t nss_2g;
+	uint8_t nss_5g;
 };
 
 /**