ath79: update qca9533 to new irq driver

ath79: update qca9533 to new irq driver

Commit c7efc93 renamed controller name
to qca,ar9340-intc and added some functions but qca9533.dtsi was overlooked.
Correct the dtsi and adust it to the new format

Add gmac and correct reset for cascaded irq and build-in switch
Also add the reference clock to soc dtsi so we don't have to have it in every dts

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>
Remove switch reset definition
Fix gmac compatible string (We only need SW_PHY_SWAP and SW_PHY_ADDR_SWAP on qca953x so use ar9330-gmac instead of ar9340-gmac.)

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>