[Bug target/128569] riscv: CSWTCH tables are placed in a writable section

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128569

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
I might look into this. I suspect this is small data vs rodata here.  There has
been other backends with a similar issue (I think MIPS even).