[PATCH] riotty.c cleanups and warning fix

Fix a bunch of whitespace oddities and use `unsigned long' for a
jiffies-holding variable.

Signed-off-by: M.Baris Demiray <baris@labristeknoloji.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>