PCI: Restore resized BAR state on resume

Resize BARs after resume to the expected size again.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199959


Fixes: d6895ad3 ("drm/amdgpu: resize VRAM BAR for CPU access v6")
Fixes: 276b738d ("PCI: Add resizable BAR infrastructure")
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org      # v4.15+