Update to 5.12-rc3
- eliminated 3 patches
- patches.rpmify/kbuild-dummy-tools-adjust-to-scripts-cc-version.sh.patch
- patches.rpmify/kbuild-dummy-tools-fix-inverted-tests-for-gcc.patch
- patches.rpmify/kbuild-dummy-tools-support-MPROFILE_KERNEL-checks-fo.patch
- update configs
- COMPILE_TEST=n (s390x)
- TMPFS_INODE64=y (s390x)