qcacmn: APIs to convert phy_ch_width to nl80211_chan_width and vice-versa

Add Spectral APIs to convert channel width values
from enum phy_ch_width to nl80211_chan_width and
vice-versa.

CRs-Fixed: 3029184
Change-Id: I60fb7fb04b943b0d70c569ff6587e5e8efd7722b

spectral/dispatcher/inc/wlan_spectral_public_structs.h

@@ -356,6 +356,8 @@ struct spectral_nl_cb {
 			       enum spectral_msg_type smsg_type);
 	void (*free_sbuff)(struct wlan_objmgr_pdev *pdev,
 			   enum spectral_msg_type smsg_type);
+	int (*convert_to_nl_ch_width)(uint8_t phy_chwidth);
+	uint8_t (*convert_to_phy_ch_width)(uint8_t nl_chwidth);
 };
 
 /**