[RESEND V6 3/5] dt-bindings: display: mediatek: change to use enum for mutex

[Rob Herring]

On Thu, 03 Mar 2022 14:57:23 +0800, Rex-BC Chen wrote:
> All single entry cases in mutex can be merged as a single enum.
> 
> Signed-off-by: Rex-BC Chen <rex-bc.chen at mediatek.com>
> ---
>  .../display/mediatek/mediatek,mutex.yaml      | 24 +++++++------------
>  1 file changed, 9 insertions(+), 15 deletions(-)
> 

Reviewed-by: Rob Herring <robh at kernel.org>