devel/llvm15: arm fixes, lite default change
Change the lite flavor to default to BE_FREEBSD rather than BE_NATIVE to allow its use in cross-build CI pipelines. Backport fix for LLVM bug 61396. [0] This fixes miscompilation of gcc on 32-bit arm. Remove an obsolete patch which breaks arm64. [1] PR: 271992 [0], 271616 [1] Reported by: jfc@mit.edu [0,1]