[Screenshot] Accept data space and pixel format for screenshot.

Previously we always take screenshot in SRGB data space. It's been working well
since the screen only has sRGB color. However, since we are moving towards
wider color, we can't make this assumption any more. Thus we need to pass the
data space and pixel format of the screenshot buffer into SurfaceFlinger and
render screenshot in the desired data space and pixel format.

BUG: 111436479
BUG: 116112787
Test: Build, flash, boot and take screenshot, observe there's no color shift.
Test: Take screenshot, verified the color profile is correct of the png.
Change-Id: I9b1a1c878f8099715c2a2c296aaf3419ca6e9bd5