linux-phytec-ti

imx-drm: imx-drm-core: various cleanups

Various cleanups are possible after the previous round of changes; these
have no real functional bearing other than tidying up the code.

Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>