Fix vector divides on systems with sizeof(long) > 4
Fix vector divides on systems with sizeof(long) > 4

The wrong div operations result in wrong transformations in many roms.

This regression was introduced in 87210c71a523482eb5d8aa5eb82468048514beac
("cleanups and rewrites to the vector divide class").

8l/rsp,8l/rsp,8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,mupen64plus/mupen64plus-rsp-cxd4,mupen64plus/mupen64plus-rsp-cxd4