ARM: multi_v7_defconfig: Enable display on Trats2 board

Enable the Exynos DSI and S6E8AA0 panel for full X11 display on Trats2.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>