This update for Mesa, libdrm provides the following enhancements:

Changes in Mesa:
- Add support for Cometlake. (jsc#SLE-4983, bsc#1137515)

Changes in libdrm:
- Add support for Amberlake. (jsc#SLE-4989, bsc#1137515)
- Add support for Cometalke. (jsc#SLE-4983, bsc#1137515)

This update was imported from the SUSE:SLE-15-SP1:Update update project.