[llvm] [AIX] Using `ccache-swig` as the `ccache` Binary (PR #90624)

[Qiongsi Wu via llvm-commits]

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@@ -256,7 +256,12 @@ unset(SHOULD_ENABLE_PROJECT)
 # Build llvm with ccache if the package is present
 set(LLVM_CCACHE_BUILD OFF CACHE BOOL "Set to ON for a ccache enabled build")
 if(LLVM_CCACHE_BUILD)
-  find_program(CCACHE_PROGRAM ccache)
+  if(${CMAKE_SYSTEM_NAME} MATCHES "AIX")
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qiongsiwu wrote:

Ah thanks! Fixed! 

https://github.com/llvm/llvm-project/pull/90624