ImageFormat: Fix YCBCR_P010 bitsPerPixel

For P010 format, Each pixel has Y and subsampled CbCr. So:
bitPerPixel = 1.5 * bitPerPixelY
bitPerPixelY = 16 bits

Bug: 200949749
Test: Camera CTS
Change-Id: I7964d64c25961dbef634ac1ef82898147ec57111
1 file changed