[CI] am57xx-evm: linux-4.20.y 0a2be5bef7ea Failure

Build URL: https://ci.linaro.org/job/openembedded-lkft-linux-stable-rc-4.20/DISTRO=lkft... Full log: https://ci.linaro.org/job/openembedded-lkft-linux-stable-rc-4.20/DISTRO=lkft... Parsed warnings/errors: https://ci.linaro.org/job/openembedded-lkft-linux-stable-rc-4.20/DISTRO=lkft... Git branch: linux-4.20.y Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Git commit: 0a2be5bef7ea0169ede55035d0c43d04c4cb6ca9

Errors: ERROR: perf-4.2-r9 do_populate_lic: QA Issue: perf: LIC_FILES_CHKSUM points to an invalid file: /srv/oe/build/tmp-lkft-glibc/work/am57xx_evm-linaro-linux-gnueabi/perf/4.2-r9/linux-tools-4.2/COPYING [license-checksum]