checkpatch: warn on COMPLEX_MACRO and MULTISTATEMENT_MACRO_USE_DO_WHILE

generates lots of false postives, so make it warn only.

Change-Id: I0b2fedc564c29bff32f7c48702a9ad54a969650b
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5d23f7c..4644326 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4599,10 +4599,10 @@
 				}
 
 				if ($dstat =~ /;/) {
-					ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
+					WARN("MULTISTATEMENT_MACRO_USE_DO_WHILE",
 					      "Macros with multiple statements should be enclosed in a do - while loop\n" . "$herectx");
 				} else {
-					ERROR("COMPLEX_MACRO",
+					WARN("COMPLEX_MACRO",
 					      "Macros with complex values should be enclosed in parentheses\n" . "$herectx");
 				}
 			}