timekeeping: Include the correct header for errno definitions

asm-generic headers are only defaults for architectures.  We need to get
the proper defintion, which goes through <linux/errno.h> and <asm/errno.h>.

Signed-off-by: Christoph Hellwig <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

include/linux/timekeeping.h

@@ -1,7 +1,7 @@
 #ifndef _LINUX_TIMEKEEPING_H
 #define _LINUX_TIMEKEEPING_H
 
-#include <asm-generic/errno-base.h>
+#include <linux/errno.h>
 
 /* Included from linux/ktime.h */