efi_loader: change efi objects initialization order

The simplest solution to revert the commit b32ac16f ("test/py: fix
test_efi_secboot/conftest.py") is to move efi_console_register()
forward before efi_disk_register().

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed by: Heinrich Schuchardt <xypron.glpk@gmx.de>