bcachefs: do not compile acl mod on minimal config

Do not compile the acl.o target if BCACHEFS_POSIX_ACL is not enabled.
Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/Makefile

@@ -2,7 +2,6 @@
 obj-$(CONFIG_BCACHEFS_FS)	+= bcachefs.o
 
 bcachefs-y		:=	\
-	acl.o			\
 	alloc_background.o	\
 	alloc_foreground.o	\
 	bkey.o			\
@@ -59,3 +58,5 @@ bcachefs-y		:=	\
 	util.o			\
 	varint.o		\
 	xattr.o
+
+bcachefs-$(CONFIG_BCACHEFS_POSIX_ACL) += acl.o

fs/bcachefs/xattr.c

@@ -562,8 +562,10 @@ static const struct xattr_handler bch_xattr_bcachefs_effective_handler = {
 
 const struct xattr_handler *bch2_xattr_handlers[] = {
 	&bch_xattr_user_handler,
+#ifdef CONFIG_BCACHEFS_POSIX_ACL
 	&nop_posix_acl_access,
 	&nop_posix_acl_default,
+#endif
 	&bch_xattr_trusted_handler,
 	&bch_xattr_security_handler,
 #ifndef NO_BCACHEFS_FS