efi_selftest: use do_bootefi_exec()

The EFI selftest should match executing a real EFI binary
as closely as possible.

Use do_bootefi_exec() to enter the EFI selftest.

Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
1 file changed