x86: Enable useful options for qemu-86

x86: Enable useful options for qemu-86

This build can be used to boot 32-bit standard-distro builds. Enable some
more options, so that all possible EFI UUIDs are decoded, we can search
memory for tables, support the full set of standard-boot features, have
full logging along with debug UART and can boot from CDROM media.

This mirrors a similar patch for qemu-x86_64

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[Drop the unknown option from defconfig]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>