Add kernel-doc entry for the @vdso_clock_mode member that was missing
from struct clocksource.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Kit Dallege <xaum.io@gmail.com>
---
 include/linux/clocksource.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 65b7c41471c3..05d5f0254959 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -72,6 +72,8 @@ struct module;
  *			in certain snapshot functions to allow callers to
  *			validate the clocksource from which the snapshot was
  *			taken.
+ * @vdso_clock_mode:	VDSO clock mode, used to map the clocksource to
+ *			a VDSO-capable clock for userspace fast paths.
  * @flags:		Flags describing special properties
  * @base:		Hardware abstraction for clock on which a clocksource
  *			is based
-- 
2.53.0