drm/imx: imx-tve: use regmap fast_io spinlock

Replace the custom spinlock with the fast_io spinlock provided by
regmap.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2020-07-21 16:16:58 +02:00
commit 07f2c94d03