test: Move unicode_ut test into lib

This test doesn't belong at the top level. Move it into the lib/
directory, to match its implementation. Rename it to drop the
unnecessary _ut suffix.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Tom Rini <trini@konsulko.com> # rpi_3, rpi_4, rpi_arm64, am64x_evm_a53, am64-sk
3 files changed