The reference to VDSO_CLOCKMODE_NONE requires vdso/clocksource.h. Currently
this header is included transitively, but that transitive inclusion is
about to go away.

Explicitly include the header.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 arch/arm64/include/asm/vdso/gettimeofday.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/vdso/gettimeofday.h b/arch/arm64/include/asm/vdso/gettimeofday.h
index c59e84105b43cdb0c823da3dd793a83781f84302..909780bcadae92109b175e23cb05e966683731d4 100644
--- a/arch/arm64/include/asm/vdso/gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/gettimeofday.h
@@ -9,6 +9,8 @@
 
 #ifndef __ASSEMBLY__
 
+#include <vdso/clocksource.h>
+
 #include <asm/alternative.h>
 #include <asm/arch_timer.h>
 #include <asm/barrier.h>

-- 
2.51.0