CHROMIUM: exynos: dt: Match ptn3460 node bindings
Rename the ptn3460 device tree node to match the bindings documentation
in Documentation/devicetree/bindings/video/ptn3460.txt
BUG=chrome-os-partner:10829
BUG=chrome-os-partner:11158
BUG=chrome-os-partner:12046
TEST=Tested on snow, screen came up on power-on and resume
Change-Id: Ib884fd732272e21bfbc8b42350b9bc49bec08dc1
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/29344
Reviewed-by: Olof Johansson <olofj@chromium.org>