dt-bindings: display: panel: Document Hydis HV070WX2-1E0

The Hydis HV070WX2-1E0 is a 7" WXGA (800x1280) TFT LCD LVDS panel that
is one of the variants used on Google Nexus 7.

Signed-off-by: Thierry Reding <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

Documentation/devicetree/bindings/display/panel/panel-lvds.yaml

···
           - chunghwa,claa070wp03xg
           # HannStar Display Corp. HSD101PWW2 10.1" WXGA (1280x800) LVDS panel
           - hannstar,hsd101pww2
+          # Hydis Technologies 7" WXGA (800x1280) TFT LCD LVDS panel
+          - hydis,hv070wx2-1e0
           - tbs,a711-panel
 
       - const: panel-lvds