[RFC][media] s5p-fimc : Need to modifiy input DMA burst count for FIMC performance.

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Hello,

I am writing this mail to suggest one thing regarding FIMC H/W setting.
You wrote the below code for setting S5P_MSCTRL_FRAME_COUNT as one.

cfg |= (S5P_MSCTRL_FRAME_COUNT(1) | S5P_MSCTRL_INPUT_MEMORY);

I think itâs better way to set the value of S5P_MSCTRL_FRAME_COUNT as 4.
Because, this value means input DMA burst count.
The default value of input DMA burst count in FIMC is 4.
And I guess if the value of less than 4 is set as input DMA burst count, 
the performance of input DMA in FIMC will be lower.

I want to know how about your opinions.

Thanks.
Best regards

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