ARM: n30: Enable Acer n35 if Acer n30 is selected

All code already present for Acer n35 is useless unless MACH_N35 is defined.

Signed-off-by: Jiri Pinkava <jiri.pinkava@vscht.cz>
[ben-linux@fluff.org: minor edit of subject]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>