But turns out that omapdrm tree is unbisectable, as I get build failures such
as (commit 28d79f3e56b2c1d5ff0fd363da3229be0962cc85):
/home/aaro/git/devel/linux/drivers/gpu/drm/omapdrm/dss/dss.c:1473:52: error: undefined identifier 'dss_debug_dump_clocks'
/home/aaro/git/devel/linux/drivers/gpu/drm/omapdrm/dss/dss.c:1472:51: warning: callwith no type!
In file included from /home/aaro/git/devel/linux/drivers/gpu/drm/omapdrm/dss/core.c:28:0:
/home/aaro/git/devel/linux/drivers/gpu/drm/omapdrm/dss/dss.h:395:25: error: conflicting types for 'port'
struct device_node *port,
^~~~