[Bug target/116371] The SME2 svpext intrinsics are missing a _lane suffix

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116371

--- Comment #2 from Richard Sandiford <rsandifo at gcc dot gnu.org> ---
Fixed on trunk.  I'll wait a bit before backporting.