MAINTAINERS: Update GPU Scheduler email

Update GPU Scheduler maintainer email.

Cc: Alex Deucher <[email protected]>
Cc: Christian König <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: AMD Graphics <[email protected]>
Cc: Direct Rendering Infrastructure - Development <[email protected]>
Signed-off-by: Luben Tuikov <[email protected]>
Acked-by: Christian König <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Link: https://patchwork.freedesktop.org/patch/508985/

Author: Luben Tuikov

MAINTAINERS

@@ -7113,7 +7113,7 @@ F:	drivers/gpu/drm/ttm/
 F:	include/drm/ttm/
 
 DRM GPU SCHEDULER
-M:	Andrey Grodzovsky <andrey.grodzovsky@amd.com>
+M:	Luben Tuikov <luben.tuikov@amd.com>
 L:	[email protected]
 S:	Maintained
 T:	git git://anongit.freedesktop.org/drm/drm-misc