x86: Enable useful options for qemu-86_64

This build can be used to boot standard distro builds, since these are
mostly 64-bit these days. Enable some more options, so that all possible
EFI UUIDs are decoded, we get a proper printf() in SPL, can search
memory for tables, support the full set of standard-boot features, have
full logging and can boot from CDROM media.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>