arm64: dts: exynos: Add support for s6e3hf2 panel device on TM2e board

This patch adds the panel device tree node for s6e3hf2 display
controller to TM2e dts.

Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>