ANDROID: fuse-bpf: Correct fuse bpf feature flag

The feature flag should only advertise fuse-bpf if fuse-bpf is a
supported feature

Bug: 372951405
Test: Compile with CONFIG_FUSE_BPF unset
Change-Id: I0049a3075f78576499168b8ebb6e833ccd18db0f
Signed-off-by: Daniel Rosenberg <drosen@google.com>

fs/fuse/inode.c

@@ -2253,6 +2253,7 @@ static struct kobj_attribute fuse_passthrough_attr =
 		__ATTR_RO(fuse_passthrough);
 #endif
 
+#ifdef CONFIG_FUSE_BPF
 static ssize_t fuse_bpf_show(struct kobject *kobj,
 				       struct kobj_attribute *attr, char *buff)
 {
@@ -2261,9 +2262,12 @@ static ssize_t fuse_bpf_show(struct kobject *kobj,
 
 static struct kobj_attribute fuse_bpf_attr =
 		__ATTR_RO(fuse_bpf);
+#endif
 
 static struct attribute *fuse_features[] = {
+#ifdef CONFIG_FUSE_BPF
 	&fuse_bpf_attr.attr,
+#endif
 #ifdef CONFIG_FUSE_PASSTHROUGH
 	&fuse_passthrough_attr.attr,
 #endif