[RFT] Please help review and test the coreboot toolchain update to GCC 11.2

[Paul Menzel]

Dear coreboot folks,

Patrick prepared the GCC 11.2 for the coreboot toolchain (crossgcc) [1]. 
It’d be great if everybody gave it a go, and reviewed the change-sets.

If somebody has a system (scripts) to compare the build artifacts of the 
current GCC 8.3.0 builds with GCC 11.2, it’d be awesome if these or the 
results could be shared.

Kind regards,

Paul

[1]: https://review.coreboot.org/c/coreboot/+/54050
      "util/crossgcc: Update gcc to 11.2"