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)