testsuite: missed testcase

I discovered I'd missed applying a testcase when fixing up the EOF
token location a while back.

gcc/testsuite/
	* c-c++-common/cpp/pragma-eof.c: New

gcc/testsuite/c-c++-common/cpp/pragma-eof.c

@@ -0,0 +1,6 @@
+/* { dg-additional-options -fopenmp }  */
+
+/* { dg-error "expected" "" { target *-*-* } 6 } */
+/* Make sure we see pragma_eol even though lacking new line.  *
+/* no newline at end of file.  */
+#pragma omp parallel