tools/kwbimage: update the list of SoCs using v1 header

Armada 38x also uses image header v1.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/tools/kwbimage.h b/tools/kwbimage.h
index 20f4d0d..893083e 100644
--- a/tools/kwbimage.h
+++ b/tools/kwbimage.h
@@ -70,7 +70,7 @@
 	struct ext_hdr_v0	kwb_exthdr;
 };
 
-/* Structure of the main header, version 1 (Armada 370, Armada XP) */
+/* Structure of the main header, version 1 (Armada 370/38x/XP) */
 struct main_hdr_v1 {
 	uint8_t  blockid;               /* 0 */
 	uint8_t  flags;                 /* 1 */