/usr/share/doc/gcj-6-powerpc-linux-gnuspe is in gcj-6-powerpc-linux-gnuspe 6.3.0-18cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gcc-6-powerpc-linux-gnuspe-base
/usr/share/doc/gcc-6-powerpc-linux-gnuspe-base