ARM: SMDK6410: Set up interrupt range for WM835x on 1190-EV1 PMIC board

The WM835x driver won't actually use this yet but it will in the
future when the changes converting it to genirq are merged.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>