pci: Add more debug detail when resources are exhausted

If PCI auto-config runs out of memory, show a few more details to help
diagnose the problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: change %x to %llx to avoid build warnings on some platforms]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>