Camera3: scale the max jpeg buffer size based on resolutions

The max jpeg buffer size was always the android.jpeg.maxSize, regardless of
the actual jpeg capture size. This creates a huge memory waste especially
for smaller size jpeg capture. Now the max jpeg buffer is linearly scaled based
on the resolution.

Bug: 14288983
Change-Id: I8a971b8e2f4fc7fec0154547bdb688579af71a47