video: s3c-fb: use ARCH_ dependancy

This patch uses ARCH_ dependancy when using s3c-fb.
S3C_DEV_FB, S5P_DEV_FIMD0 cannot be enabled on EXYNOS5.
So, ARCH_ should be used as dependancy for s3c-fb.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
video: s3c-fb: remove duplicated S3C_FB_MAX_WIN

S3C_FB_MAX_WIN is already defined in 'plat-samsung/include/plat/fb.h'.
So, this definition in 'include/video/samsung_fimd.h' should be
removed to avoid the duplication.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
video: s3c-fb: remove unnecessary brackets

This patch removes unnecessary brackets and the duplicated
VIDTCON2 definition.

Also, header comment is modified, because EXYNOS series is
supported and <mach/regs-fb.h> is not available.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
video: s3c-fb: add the bit definitions for CSC EQ709 and EQ601

This patch adds the bit definitions for CSC EQ709 and EQ601.
These definitons are used to control the CSC parameter such as
equation 709 and equation 601.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>