ARM: dts: exynos5420: add nodes for jpeg codec

Add nodes for jpeg codec in Exynos5420 SoC.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
[k.kozlowski: fixed up minor differences for applying]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

Signed-off-by: Kukjin Kim <kgene@kernel.org>