test: hush: Test hush if/else

As asked in commit 9c6bf1715f6a ("test/py: hush_if_test: Add tests to cover
octal/hex values"), this commit translates test_hush_if_test.py to a C test.

Signed-off-by: Francis Laniel <francis.laniel@amarulasolutions.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2 files changed