[PATCH] PCI Express Hotplug: splut pciehp_ctrl.c::configure_new_function

configure_new_function is way too big (>600 lines). Split it in 2 functions,
one for the new functions and one for bridges. And split out a small piece
from the bridge function which is used twice to it's own function.

Patch is huge because of the identation changes but does nothing than the
split and some minor coding style changes.