Provide the contrast used in IPA to Bayer parameters. Similar to the calculated Gamma value we will pass this value into the debayer fragment shader for further consumption. Reviewed-by: Milan Zamazal <mzamazal@redhat.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>