Integrate libdisplay-info (optional at first)
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1 unresolved thread
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This series prepares libweston/DRM-backend to use libdisplay-info for parsing EDID. Libdisplay-info will be used if it was found during build. There is also a Meson sub-project for fallback.
The old ad hoc EDID parsing code is still left in, to be used when libdisplay-info is not available. The old code is intended to be removed in the future and make libdisplay-info a hard dependency in DRM-backend.
The old ad hoc parser will no longer pretend that all monitors are capable of all HDR modes. This makes libdisplay-info mandatory for HDR testing already. In the future, libdisplay-info will be used to extract HDR information from EDID, and the ad hoc parser will not get code for that.
Considerations for merging during the release cycle: no ABI is broken, I think the changes are low-risk, and even though a new dependency is introduced, it is optional and automatic. Therefore I think this is suitable for landing before the beta release.
Libdisplay-info does produce potentially different strings than the old ad hoc code.
Draft until I have fixed CI failures.