checkpatch: change externals to globals

Make error message say 'ERROR: do not initialise globals to 0 or NULL'
rather than 'ERROR: do not initialise externals to 0 or NULL'.  Makes more
sense in the context since there is an extern keyword in C and that is a
global declaration within the scope of the current file.
Signed-off-by: Joe Eloff <kagen101@gmail.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -1791,9 +1791,9 @@ sub process {
 			WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
 		}
 
-# check for external initialisers.
+# check for global initialisers.
 		if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) {
-			ERROR("do not initialise externals to 0 or NULL\n" .
+			ERROR("do not initialise globals to 0 or NULL\n" .
 				$herecurr);
 		}
 # check for static initialisers.