sunxi:gmac: Add A20 gmac irq

A20 have gigabit ethernet controller, that patchs adds IRQ for it,
for new driver

V2: Use tabs for indent

Signed-off-by: Alexsey Shestacov <wingrime@linux-sunxi.org>
sunxi:rfkill: Enable sunxi-rfkill driver for whole sunxi_platform

Currently only for a13 and a10, maybe required for some sunxi wifi
drivers.

Signed-off-by: Alexsey Shestacov <wingrime@linux-sunxi.org>