- Copy rhel/diff.config to config-aarch64.
- Enable building the kernel config in such a way that the defconfig's
options are _used_ but certain RHEL-specific options are overridden.
- The build salt got carried over from the RHEL diff.config, remove that.
- Unset CONFIG_DEBUG_INFO_REDUCED so that CONFIG_DEBUG_INFO_BTF can be
enabled. Otherwise the build fails at the step where the bpftool
package gets built.
- Removed versions from file names.
- Add spec files that specify items that vary between kernel versions.
- Move the kernel-ml SPEC file as the file that gets included.
- Make the include file more "generic" such that a kernel can be built
with only version, package name and source0 specified.
- Do not `exit 1` on finding new options.
- Remove the '-s' that gets passed to the make macro to get "normally
verbose" build output.
