[clang] [clang-sycl-linker] Add static archive (.a) support (PR #202829)

[Alexey Bader via cfe-commits]

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@@ -50,7 +50,10 @@ be passed down to downstream AOT compilation tools like 'ocloc' and 'opencl-aot'
     -help-hidden                  Display all available options
     -help                         Display available options (--help-hidden for more)
     -L <dir>                      Add <dir> to the library search path
-    --bc-library <name>           Add LLVM bitcode library <name> (with extension) to the link. A relative <name> is resolved against -L paths; an absolute path is taken as-is.
+    -l <libname>                  Search for library <libname>
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bader wrote:

>From my POV, trying to avoid duplication doesn't worth it. 
The testing results show that LIT tests do not cover `clang-nvlink-wrapper` functionality enough to avoid failures in post-commit testing. The de-duplicated code will be a mine field with high chances to blow something on NVIDIA targets.

https://github.com/llvm/llvm-project/pull/202829