fix compiler warning

src/dtblint.c: At top level:
./src/dt/common.h:324:12: warning: ‘of_register_fixup’ defined but not used [-Wunused-function]
 static int of_register_fixup(int (*fixup)(struct device_node *, void *), void *context)
            ^

Fixes: f2243552be90 ("barebox-state: import from barebox")

1 files changed, 2 insertions, 1 deletions

diff --git a/src/dt/common.h b/src/dt/common.h
index bfd3c5d..0d8969d 100644
--- a/src/dt/common.h
+++ b/src/dt/common.h
@@ -321,7 +321,8 @@ static inline int unregister_device(struct device_d *d)
 	return 0;
 }
 
-static int of_register_fixup(int (*fixup)(struct device_node *, void *), void *context)
+static inline int of_register_fixup(int (*fixup)(struct device_node *, void *),
+				    void *context)
 {
 	return 0;
 }