[lldb] [llvm] [lldb] Support disassembling RISC-V proprietary instructions (PR #145793)

[David Spickett via llvm-commits]

================
@@ -304,6 +304,9 @@ Changes to LLDB
     stop reason = SIGSEGV: sent by tkill system call (sender pid=649752, uid=2667987)
   ```
 * ELF Cores can now have their siginfo structures inspected using `thread siginfo`.
+* Changed invalid disassembly to say <unknown> instead of being blank.
+* Changed the format of opcode bytes to match llvm-objdump when disassembling
+  RISC-V with the -b option.
----------------
DavidSpickett wrote:

"when disassembling RISC-V code with `disassemble`'s `--byte` option."

https://github.com/llvm/llvm-project/pull/145793