Convert display/msm/gmu.txt to display/msm/gmu.yaml and remove the old
text bindings.  The 'sram' text from the old binding never applied to
the GMU so it was not converted but all the other properties were correct.
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@chromium.org>