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Enable Dynamic Range and Mastering Infoframe for HDR content, which is defined in CEA 861.3 spec. The metadata will be computed based on blending policy in userspace compositors and passed as a connector property blob to driver. The same will be sent as infoframe to panel which support HDR. Change-Id: I8025c3dba43dc5bb614115ede7841fe89d9f4d0b Signed-off-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Zheng Yang <zhengyang@rock-chips.com> (am from https://patchwork.kernel.org/patch/9756447/)