gcc-target: Don't install target gcc libdir files
Installing /usr/lib/gcc/* means we'd have two copies, one from gcc-cross
and one from here. These can confuse gcc cross where includes use #include_next
and builds track file dependencies (e.g. perl and its makedepends code).
For determinism we don't install this to the sysroot, ever and rely on the
copy from gcc-cross.
[YOCTO #7287]
(From OE-Core rev:
15b3324b769dc92e1b0d4b9da9fbfccbc8dde9dd)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
