[ARM] Kirkwood: more factorization of the PCIe init code
[ARM] Kirkwood: more factorization of the PCIe init code

Signed-off-by: Nicolas Pitre <d659c10e27d52b00987b65e85d99bce5480adcae@fluxnic.net>

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