scripts: get_abi.pl: use STDERR for search-string and show-hints

On undefined checks, use STDOUT only for the not found entries.

All other data (search-string and show-hints) is printed at
STDERR.

Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Link: https://lore.kernel.org/r/51c6a3[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

scripts/get_abi.pl

···
 		for (my $i = 0; $i < @names; $i++) {
 			if ($found_string && $hint) {
 				if (!$i) {
-					print "--> $names[$i]\n";
+					print STDERR "--> $names[$i]\n";
 				} else {
-					print "    $names[$i]\n";
+					print STDERR "    $names[$i]\n";
 				}
 			}
 			foreach my $re (@expr) {
···
 		}
 		next if ($exact);
 
+		print "$file not found.\n" if (!$search_string || $found_string);
+
 		if ($hint && (!$search_string || $found_string)) {
 			my $what = $leaf{$leave}->{what};
 			$what =~ s/\xac/\n\t/g;
 			if ($leave ne "others") {
-				print "    more likely regexes:\n\t$what\n";
+				print STDERR "    more likely regexes:\n\t$what\n";
 			} else {
-				print "    tested regexes:\n\t$what\n";
+				print STDERR "    tested regexes:\n\t$what\n";
 			}
-			next;
 		}
-		print "$file not found.\n" if (!$search_string || $found_string);
 	}
 }
 
···
 				}
 			}
 			if ($search_string && $added) {
-				print "What: $what\n" if ($what =~ m#$search_string#);
+				print STDERR "What: $what\n" if ($what =~ m#$search_string#);
 			}
 
 		}