qcacld-3.0: Define new_ch_width in csa_offload_params as phy_ch_width

Currently sme_switch_channel set new_ch_width as phy_ch_width, while
wma_csa_offload_handler set new_ch_width as raw bit in wide bandwidth
channel switch IE.
Clean up the code. Define new_ch_width in csa_offload_params as
phy_ch_width.

Change-Id: Iadecc7693bf4ffd9f9562405ef18ea9d25d45c9e
CRs-Fixed: 3324762

core/sme/src/common/sme_api.c

@@ -16158,7 +16158,7 @@ QDF_STATUS sme_switch_channel(mac_handle_t mac_handle,
 
 	qdf_copy_macaddr(&csa_offload_event->bssid, bssid);
 	csa_offload_event->csa_chan_freq = (uint32_t)chan_freq;
-	csa_offload_event->new_ch_width = (uint8_t)chan_width;
+	csa_offload_event->new_ch_width = chan_width;
 	csa_offload_event->channel =
 		wlan_reg_freq_to_chan(mac_ctx->pdev,
 				      csa_offload_event->csa_chan_freq);