wpa: Correctly build the hostapd BSD driver

driver.bsd.c initializes itself differently when built for
hostapd than it does when built for wpa_supplicant.

MFC after:	1 week

usr.sbin/wpa/hostapd/Makefile

@@ -5,12 +5,14 @@
 
 .include "../Makefile.crypto"
 
-.PATH.c:${HOSTAPD_DISTDIR}
+.PATH.c:${HOSTAPD_DISTDIR} \
+	${WPA_DISTDIR}/src/drivers
 
 PACKAGE=	hostapd
 PROG=	hostapd
 SRCS=	config_file.c \
 	ctrl_iface.c \
+	driver_bsd.c \
 	eap_register.c \
 	main.c
 

usr.sbin/wpa/src/drivers/Makefile

@@ -10,7 +10,6 @@ INTERNALLIB=
 .PATH:	${WPA_DISTDIR}/src/drivers
 
 SRCS=	drivers.c \
-	driver_bsd.c \
 	driver_common.c \
 	driver_wired.c \
 	driver_wired_common.c

usr.sbin/wpa/wpa_supplicant/Makefile

@@ -18,6 +18,7 @@ SRCS=	blacklist.c \
 	config_file.c \
 	ctrl_iface.c \
 	ctrl_iface_unix.c \
+	driver_bsd.c \
 	eap_register.c \
 	events.c \
 	gas_query.c \