[llvm] [llvm-objcopy] Add llvm-objcopy option --ignore-symbol (PR #80873)

[James Henderson via llvm-commits]

================
@@ -455,6 +455,18 @@ them.
  Set the start address of the output to ``<addr>``. Overrides any previously
  specified :option:`--change-start` or :option:`--adjust-start` options.
 
+.. option:: --skip-symbol <symbol>
+
+ Do not change parameters of symbol <symbol> when executing other options that
+ can change the symbol's name, binding or visibility
----------------
jh7370 wrote:

```suggestion
 can change the symbol's name, binding or visibility.
```
Nit

https://github.com/llvm/llvm-project/pull/80873