msm: vidc: Update HDR10Plus extradata size correctly

HDR10Plus was using HDR10 structure size. Correct it to
use proper size.

Change-Id: I9b757f64f1e607904e57057cbece2b9b3afa024e
Signed-off-by: Vaibhav Deshu Venkatesh <vdeshuve@codeaurora.org>