clang: Do not lock clang as only cross compiler option
clang: Do not lock clang as only cross compiler option

clang might be used for more than just static compiler on target and
therefore lock-stepping it with needing clang cross-compiler is not
right thing

Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

kraj/meta-clang,kraj/meta-clang,kraj/meta-clang