arm: mvebu: clearfog: fix chip name comment

The clearfog uses Armada 388.

Cc: Stefan Roese <sr@denx.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>

board/solidrun/clearfog/kwbimage.cfg

@@ -2,7 +2,7 @@
 # Copyright (C) 2015 Stefan Roese <sr@denx.de>
 #
 
-# Armada XP uses version 1 image format
+# Armada 38x use version 1 image format
 VERSION		1
 
 # Boot Media configurations