[Bug target/104590] ppc64: even/odd permutation for VSX 64-bit to 32-bit conversions is no longer necessary.

[seiko at imavr dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104590

--- Comment #1 from Sayed Adel <seiko at imavr dot com> ---
forget to mention:
- vector signed int vec_signede(vector double) -> xvcvdpsxws
- vector signed int vec_signedo(vector double) -> xvcvdpsxws