[Bug target/119408] LoongArch: Q Suffix for __float128 Literals Not Supported

[chenglulu at loongson dot cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119408

--- Comment #7 from chenglulu <chenglulu at loongson dot cn> ---
Add “q/Q” suffix support.
https://gcc.gnu.org/pipermail/gcc-patches/2025-March/678874.html