efi_selftest: enable CONFIG_CMD_BOOTEFI_SELFTEST

efi_selftest: enable CONFIG_CMD_BOOTEFI_SELFTEST

The EFI selftest has been broken by a patch on efi-next.
We should enable CONFIG_CMD_BOOTEFI_SELFTEST on
qemu-x86_defconfig and qemu-x86_64_defconfig by default
to catch this type of problem in the Travis CI tests.

These systems typically have abundant memory so that
enabling this option should not pose a problem.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>