staging: rtl8188eu: convert rtw_hal_antdiv_before_linked() to bool

Function rtw_hal_antdiv_before_linked() returns boolean values, so
change the return type from u8 to bool.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20200114134422.13598-2-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/rtl8188e_dm.c

@@ -184,7 +184,7 @@ void rtw_hal_antdiv_rssi_compared(struct adapter *Adapter, struct wlan_bssid_ex
 }
 
 /*  Add new function to reset the state of antenna diversity before link. */
-u8 rtw_hal_antdiv_before_linked(struct adapter *Adapter)
+bool rtw_hal_antdiv_before_linked(struct adapter *Adapter)
 {
 	struct odm_dm_struct *dm_odm = &Adapter->HalData->odmpriv;
 	struct sw_ant_switch *dm_swat_tbl = &dm_odm->DM_SWAT_Table;

drivers/staging/rtl8188eu/include/hal_intf.h

@@ -209,7 +209,7 @@ void	rtw_hal_set_bwmode(struct adapter *padapter,
 void	rtw_hal_set_chan(struct adapter *padapter, u8 channel);
 void	rtw_hal_dm_watchdog(struct adapter *padapter);
 
-u8	rtw_hal_antdiv_before_linked(struct adapter *padapter);
+bool rtw_hal_antdiv_before_linked(struct adapter *padapter);
 void	rtw_hal_antdiv_rssi_compared(struct adapter *padapter,
 				     struct wlan_bssid_ex *dst,
 				     struct wlan_bssid_ex *src);