drm/etnaviv: split out wait for gpu idle

Split out into a new externally visible function, as the IOMMUv2
code needs this functionality, too.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Lucas Stach 2016-08-17 15:16:57 +02:00
commit b88163e36c
2 changed files with 23 additions and 18 deletions