RISC-V targets with IRLEN >= 8 are broken

[en-sc]

#1091 introduced a bug.

The buf_cmp() function is faulty. Please see: https://review.openocd.org/c/openocd/+/8489

If you are affected, please back-port the patch form the mainline: https://review.openocd.org/Documentation/user-review-ui.html#download

Huge thanks to @jrtc27 for the catch.

[en-sc]

The fix for the issue is being backported in #1132.
However, current upstream (fd7b66c) is buggy.
See https://review.openocd.org/c/openocd/+/7056/comment/3c4d9185_83614e2a/
The fix for the issue with upstream is cherry-picked into #1132.

[en-sc]

The fix is available (fd7b66c) since version 3bed4c8.