sandbox: enable CMD_BOOTEFI_HELLO and CMD_EFIDEBUG
'bootefi hello' is used in one of the Python tests.
efidebug can be used to verify the correct initialization of the UEFI
sub-system.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromum.org>