[ Upstream commit 2ce4462f2724d1b3cedccea441c6d18bb360629a ] Driver builds fine with COMPILE_TEST. Enable it for wider test coverage and easier maintenance. Signed-off-by: Wolfram Sang <wsa@kernel.org> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org>