wpa: Define CONFIG_DEBUG_FILE globally

We defined CONFIG_DEBUG_FILE only in libwpautils, not in wpa_supplicant,
so all it did was enable code that never got called.  Enable it at the
top level so it also applies to wpa_supplicant(8), and the -f option
mentioned in the manual page now actually works.

PR:		281617
MFC after:	1 week
Reviewed by:	cy
Differential Revision:	https://reviews.freebsd.org/D57723

usr.sbin/wpa/Makefile.inc

@@ -40,6 +40,7 @@ CFLAGS+=-DCONFIG_IEEE80211R
 CFLAGS+=-DCONFIG_IEEE80211W
 CFLAGS+=-DTLS_DEFAULT_CIPHERS=\"DEFAULT:!EXP:!LOW\"
 CFLAGS+=-DCONFIG_DEBUG_SYSLOG
+CFLAGS+=-DCONFIG_DEBUG_FILE
 CFLAGS+=-DPKCS12_FUNCS
 CFLAGS+=-DCONFIG_GAS
 CFLAGS+=-DCONFIG_PEERKEY

usr.sbin/wpa/src/utils/Makefile

@@ -22,8 +22,6 @@ SRCS=	base64.c \
 	wpa_debug.c \
 	wpabuf.c
 
-CFLAGS+=-DCONFIG_DEBUG_FILE
-
 .if ${MK_INET6} != "no"
 CFLAGS+= -DCONFIG_IPV6
 .endif