PCI/AER: Remove local PCI_BUS() define and use PCI_BUS_NUM() from PCI
PCI/AER: Remove local PCI_BUS() define and use PCI_BUS_NUM() from PCI

Change to remove local PCI_BUS() define and use the new PCI_BUS_NUM()
interface from PCI.

Signed-off-by: Shuah Khan <f9cffb48774c5c540daacd974d14454046841468@hp.com>
Signed-off-by: Bjorn Helgaas <f10ec01be0c6b54271af5c550cd257810bdf3268@google.com>
Acked-by: Joerg Roedel <4688a6871ff025801033b3c4b039d55a29f8f937@8bytes.org>
KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs