make marker_debug static

With the needlessly global marker_debug being static gcc can optimize the
unused code away.

Signed-off-by: Adrian Bunk <[email protected]>
Acked-by: Mathieu Desnoyers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
1 file changed