Add the missing enable and disable function.
Remove dummy mask and unmask function and use the one provided by
irq_dummy_chip.
Allow interrupt status register being defined from dts.
Add ddr_wb_flush for ar934x/qca953x.
Rename controller name to qca,ar9340-intc because this design was
first introduced in AR934x.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Johann Neuhauser <johann@it-neuhauser.de>