Merge #61

61: Update link.x r=almindor a=richardeoin

Similar to #38, riscv compilers may also generate 'small ro data' `.srodata` sections. 

This doesn't appear to be well documented, but see [this blog post](https://www.sifive.com/blog/all-aboard-part-3-linker-relaxation-in-riscv-toolchain

) for small amount of context.

Co-authored-by: Richard Meadows <962920+richardeoin@users.noreply.github.com>