P2P: Align p2p_buf_add_pref_channel_list() prototype with definition

Align the p2p_buf_add_pref_channel_list() prototype and definition in
p2p_build.c and p2p_i.h. Use unsigned int over u32 as it is actully
called with an unsigned int parameter.

This removes compilation warning on platform where u32 != unsigned int.

Signed-off-by: Cedric Izoard <cedric.izoard@ceva-dsp.com>

src/p2p/p2p_build.c

@@ -111,7 +111,7 @@ void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
 
 
 void p2p_buf_add_pref_channel_list(struct wpabuf *buf,
-				   const u32 *preferred_freq_list,
+				   const unsigned int *preferred_freq_list,
 				   unsigned int size)
 {
 	unsigned int i, count = 0;

src/p2p/p2p_i.h

@@ -789,7 +789,8 @@ void p2p_buf_add_persistent_group_info(struct wpabuf *buf, const u8 *dev_addr,
 int p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
 		     int all_attr);
 void p2p_buf_add_pref_channel_list(struct wpabuf *buf,
-				   const u32 *preferred_freq_list, u32 size);
+				   const unsigned int *preferred_freq_list,
+				   unsigned int size);
 
 /* p2p_sd.c */
 struct p2p_sd_query * p2p_pending_sd_req(struct p2p_data *p2p,