MIPS: pci-ar724x: use per-controller IRQ base
MIPS: pci-ar724x: use per-controller IRQ base

Change to the code to use per-controller IRQ base.
This is needed for multiple PCI controller support.

Signed-off-by: Gabor Juhos <0b85b0feb94c9a44e8676965f48a70291ba74edb@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4915/
Signed-off-by: John Crispin <be6487f9df4dce44a640672d6c07330104d43593@openwrt.org>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs