[PATCH] atmel: CodingStyle cleanup

Reading this driver I noticed some trailing whitespaces and tabs so I
removed them with some 80th column fitting and a few more similar
things.

Signed-off-by: Carlo Perassi <carlo@linux.it>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>