fault-inject: make enum fault_flags available unconditionally

This will allow using should_fail_ex from code without having to
make it conditional on CONFIG_FAULT_INJECTION.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20251113084022.1255121-2-hch@lst.de
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

Author: Christoph Hellwig

include/linux/fault-inject.h

@@ -8,6 +8,10 @@
 struct dentry;
 struct kmem_cache;
 
+enum fault_flags {
+	FAULT_NOWARN =	1 << 0,
+};
+
 #ifdef CONFIG_FAULT_INJECTION
 
 #include <linux/atomic.h>
@@ -36,10 +40,6 @@ struct fault_attr {
 	struct dentry *dname;
 };
 
-enum fault_flags {
-	FAULT_NOWARN =	1 << 0,
-};
-
 #define FAULT_ATTR_INITIALIZER {					\
 		.interval = 1,						\
 		.times = ATOMIC_INIT(1),				\