uapi/media: Update yuv buffer size based on hardware requirement

1. Update buffer layout based on HW spec.
2. Remove padding at end of each buffer.
3. Align the buffer size with video firmware spec.

CRs-Fixed: 2214722
Change-Id: I51eca554fcd5316a0968dcf505df8883a656a2bb
Signed-off-by: Chinmay Sawarkar <chinmays@codeaurora.org>