amd64-linux-tdep: Don't treat fs_base and gs_base as system registers.

These registers can be changed directly in userspace, and similar
registers to support TLS on other architectures (tpidr* on ARM and
AArch64, tp on RISC-V) are treated as general purpose registers.

Reviewed-By: Tom Tromey <tom@tromey.com>
1 file changed