/usr/lib/gcc-cross/powerpc-linux-gnuspe/6/plugin/libcc1plugin.so.0 is in gcc-6-powerpc-linux-gnuspe 6.3.0-18cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/gcc-cross/powerpc-linux-gnuspe/6/plugin/libcc1plugin.so.0.0.0