Rename config.h to roc_shmem_config.h

[ROCm/rocshmem commit: 6486e29078]

projects/rocshmem/src/context_device.cpp

@@ -20,7 +20,7 @@
  * IN THE SOFTWARE.
  *****************************************************************************/
 
-#include "config.h"  // NOLINT(build/include_subdir)
+#include "rocshmem_config.h"  // NOLINT(build/include_subdir)
 #include "backend_bc.hpp"
 #include "context_incl.hpp"
 #include "util.hpp"