misc/cuttlefish: fix build on powerpc

In file included from /wrkdirs/usr/ports/misc/cuttlefish/work/Cuttlefish-2.7.0/lib/libsquish/clusterfit.cpp:27:
In file included from /wrkdirs/usr/ports/misc/cuttlefish/work/Cuttlefish-2.7.0/lib/libsquish/clusterfit.h:32:
In file included from /wrkdirs/usr/ports/misc/cuttlefish/work/Cuttlefish-2.7.0/lib/libsquish/simd.h:32:
In file included from /wrkdirs/usr/ports/misc/cuttlefish/work/Cuttlefish-2.7.0/lib/libsquish/simd_ve.h:29:
/usr/lib/clang/13.0.0/include/altivec.h:13:2: error: "AltiVec support not enabled"