The prototype of __vdso_gettimeofday() uses this struct.
However gettime.h's own includes do not provide a definition for it.

Add a forward declaration, similar to other used structs.

Fixes: 42874e4eb35b ("arch: vdso: consolidate gettime prototypes")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 include/vdso/gettime.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/vdso/gettime.h b/include/vdso/gettime.h
index c50d152e7b3e0670ea87cb51452c0a03b98403a0..9ac161866653a01c2a54702cb72fe5bda488ee2c 100644
--- a/include/vdso/gettime.h
+++ b/include/vdso/gettime.h
@@ -5,6 +5,7 @@
 #include <linux/types.h>
 
 struct __kernel_timespec;
+struct __kernel_old_timeval;
 struct timezone;
 
 #if !defined(CONFIG_64BIT) || defined(BUILD_VDSO32_64)

-- 
2.50.1