[libclang] Use check_linker_flag instead of llvm_check_linker_flag

Follow-up to #96171 in an attempt to fix the Solaris bots.

Author: ldionne

clang/tools/libclang/CMakeLists.txt

@@ -190,8 +190,8 @@ if(ENABLE_SHARED)
       include(CheckLinkerFlag)
       # The Solaris 11.4 linker supports a subset of GNU ld version scripts,
       # but requires a special option to enable it.
-      llvm_check_linker_flag(CXX "-Wl,-z,gnu-version-script-compat"
-                             LINKER_SUPPORTS_Z_GNU_VERSION_SCRIPT_COMPAT)
+      check_linker_flag(CXX "-Wl,-z,gnu-version-script-compat"
+                        LINKER_SUPPORTS_Z_GNU_VERSION_SCRIPT_COMPAT)
       # Older Solaris (and illumos) linker does not support GNU ld version scripts
       # and does not support GNU version script compat.
       if (LINKER_SUPPORTS_Z_GNU_VERSION_SCRIPT_COMPAT)