x86/PCI: prepare pci_mmcfg_check_reserved() to be called at runtime
x86/PCI: prepare pci_mmcfg_check_reserved() to be called at runtime

Prepare function pci_mmcfg_check_reserved() to be called at runtime
for PCI host bridge hot-plugging

Reviewed-by: Yinghai Lu <0674548f4d596393408a51d6287a76ebba2f42aa@kernel.org>
Signed-off-by: Jiang Liu <c745fa7b96fe79db6d669643d5feb03ff0641332@gmail.com>
Signed-off-by: Bjorn Helgaas <f10ec01be0c6b54271af5c550cd257810bdf3268@google.com>
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,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas