[PATCH] ktime/hrtimer: fix kernel-doc comments

Fix kernel-doc formatting in ktime.h and hrtimer.[ch] files.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>