[PATCH] atmel: memset correct range

Specify the correct range when calling memset in atmel_get_range.
Do this by specifying the size of the structure, rather than the size
of the pointer.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>