[Intel-gfx] [PATCH i-g-t] overlay: fix debugfs path when debugfs mounted on path '/debug'

[Chris Wilson]

Quoting changbin.du at intel.com (2017-12-07 05:56:43)
> From: Changbin Du <changbin.du at intel.com>
> 
> It mistakenly set debugfs root path to "/debug/dri", so correct it.
> 
> Signed-off-by: Changbin Du <changbin.du at intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris