graphics/freeimage: unbreak consumers on arm* with NEON

$ echo 'int main() {}' | cc -xc - -o /dev/null -L/usr/local/lib -lfreeimage -lm
/usr/local/lib/libfreeimage.so: undefined reference to `png_init_filter_functions_neon'
cc: error: linker command failed with exit code 1 (use -v to see invocation)