mips: fix stride handling in 2d
mips: fix stride handling in 2d

ijsf/OpenWebRTC-orc,Distrotech/orc,MOXfiles/orc,mojaves/orc,okuoku/nmosh-orc,ijsf/OpenWebRTC-orc,Distrotech/orc,jpakkane/orc,MOXfiles/orc,ijsf/OpenWebRTC-orc,MOXfiles/orc,jpakkane/orc,jpakkane/orc,mojaves/orc,Distrotech/orc,okuoku/nmosh-orc,mojaves/orc,okuoku/nmosh-orc