checkpatch: update suggested printk conversions

Direct conversion of printk(KERN_<LEVEL>...  to pr_<level> isn't the
preferred conversion when a struct net_device or struct device is
available.

Hint that using netdev_<level> or dev_<level> is preferred to using
pr_<level>.  Add netdev_dbg and dev_dbg variants too.

Miscellaneous whitespace neatening of a misplaced close brace.

Signed-off-by: Joe Perches <[email protected]>
Cc: Andy Whitcroft <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Dan Carpenter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: JoePerches

scripts/checkpatch.pl

@@ -421,7 +421,7 @@ sub top_of_kernel_tree {
 		}
 	}
 	return 1;
-    }
+}
 
 sub parse_email {
 	my ($formatted_email) = @_;
@@ -2399,8 +2399,10 @@ sub process {
 			my $orig = $1;
 			my $level = lc($orig);
 			$level = "warn" if ($level eq "warning");
+			my $level2 = $level;
+			$level2 = "dbg" if ($level eq "debug");
 			WARN("PREFER_PR_LEVEL",
-			     "Prefer pr_$level(... to printk(KERN_$1, ...\n" . $herecurr);
+			     "Prefer netdev_$level2(netdev, ... then dev_$level2(dev, ... then pr_$level(...  to printk(KERN_$orig ...\n" . $herecurr);
 		}
 
 		if ($line =~ /\bpr_warning\s*\(/) {