staging: r8188eu: make OnAssocReq static

OnAssocReq is used only in rtw_mlme_ext.c. Make this function static.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20221024081417.66441-3-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme_ext.c

@@ -911,7 +911,7 @@ static void UpdateBrateTblForSoftAP(u8 *bssrateset, u32 bssratelen)
 	}
 }
 
-unsigned int OnAssocReq(struct adapter *padapter, struct recv_frame *precv_frame)
+static unsigned int OnAssocReq(struct adapter *padapter, struct recv_frame *precv_frame)
 {
 	u16 capab_info;
 	struct rtw_ieee802_11_elems elems;

drivers/staging/r8188eu/include/rtw_mlme_ext.h

@@ -536,8 +536,6 @@ void start_clnt_auth(struct adapter *padapter);
 void start_clnt_join(struct adapter *padapter);
 void start_create_ibss(struct adapter *padapter);
 
-unsigned int OnAssocReq(struct adapter *padapter,
-			struct recv_frame *precv_frame);
 unsigned int OnAssocRsp(struct adapter *padapter,
 			struct recv_frame *precv_frame);
 unsigned int OnProbeReq(struct adapter *padapter,