Rust 1.49.0 needed the 0001-rustc_target-Fix-dash-vs-underscore-mismatches-in-op.patch
patch and newer versions not.
Signed-off-by: Ralf Anton Beier <ralf_beier@me.com>
The rust patches for riscv64 have been upstreamed
and are not needed anymore.
The riscv64 patches for libstd-rs need to be
applied to libc-0.2.93 to work. Some slight
modifications are necessary.
Signed-off-by: Ralf Anton Beier <ralf_beier@me.com>