drm/exynos/hdmi: replace all writeb with writel
drm/exynos/hdmi: replace all writeb with writel

Registers are 32-bit, even if only lower 8-bits are used.

Signed-off-by: Andrzej Hajda <dcc2b772defa18622a340d324a717fd6b8ee2807@samsung.com>
Reviewed-by: Gustavo Padovan <029a69b25713d0799b81c0a39685b4c040fa1425@collabora.co.uk>
Signed-off-by: Inki Dae <bae4a7a27bbc965064e97edd6e179ac4979db440@samsung.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs