test/py: efi_capsule: align with the syntax change of mkeficapsule

Since the syntax of mkeficapsule was changed in the previous commit,
we need to modify command line arguments in a pytest script.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed