move passing stage1 compile error tests to stage2

test/cases/compile_errors/pointer_arithmetic_on_pointer-to-array.zig

@@ -0,0 +1,14 @@
+export fn foo() void {
+    var x: [10]u8 = undefined;
+    var y = &x;
+    var z = y + 1;
+    _ = z;
+}
+
+// error
+// backend=stage2
+// target=native
+//
+// :4:15: error: incompatible types: '*[10]u8' and 'comptime_int'
+// :4:13: note: type '*[10]u8' here
+// :4:17: note: type 'comptime_int' here