kernel: skip kcfg search path injection for kernels with kernel-cache

The kcfg sysroot search path (type=kmeta) was being injected
unconditionally, which caused fragment conflicts for linux-yocto kernels
that already have their own kernel-cache meta branch. The injected
search path would roll back fragments to an older set.

Make the injection conditional and fix the root cause:

- kernel_cache_feature() now checks SRC_URI for type=kmeta entries.
  Kernels with kernel-cache get short paths (e.g. cfg/container.scc)
  that resolve directly via the kernel-cache's search path. Kernels
  without kernel-cache get the sysroot-relative ../../ paths as before.

- distro_cond_feature() now passes d.getVar('SRC_URI') instead of an
  empty string, so kernel_cache_feature() can actually see whether the
  kernel has a kernel-cache.

- SRC_URI append and inject_kcfg_search_path prefunc skip when
  type=kmeta is already present.

- Remove unused kernel_cache_cond_feature() which was the original
  conditional implementation but was never wired up.

This restores the original design intent from commit 5c212911
("allow conditional use of yocto-cfg-fragments"): kernel-cache is
the first choice for fragment resolution, sysroot is the fallback.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

0 files changed, 0 insertions, 0 deletions