[PATCH 0/9] add more devicetree support in arch-mmp

1. Fix the build issue in mmp-dt.c since irq interface changed.
2. Parse intc in new irq that could support both pxa168 and mmp2.
After arch-mmp is totally moved to device tree, irq-pxa168 and irq-mmp2
will be removed.
3. Parse interrupt in gpio controller.
4. Append timer with device tree.
5. Update documents.