Revert "PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge"

This reverts commit 365cc41d which is
commit 1d60796a upstream.

It breaks the Android kernel buiild and can be brought back in the
future in an safe way if it is really needed.

Bug: 161946584
Change-Id: Iad1ce90f2bc09094aa0efba50f35d47b1695134a
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>