imx: ventana: add GW5520 support

The GW5520 has an IMX6Q SoC with 512MB of DDR3, 256MB of NAND flash as well as:
 * 2x MiniPCIe sockets
 * 2x USB host sockets
 * 2x i210 GigE
 * HDMI out
 * digital I/O expansion

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/board/gateworks/gw_ventana/eeprom.c b/board/gateworks/gw_ventana/eeprom.c
index 3edc915..ab3bab8 100644
--- a/board/gateworks/gw_ventana/eeprom.c
+++ b/board/gateworks/gw_ventana/eeprom.c
@@ -80,6 +80,9 @@
 	case '4':
 		type = GW54xx;
 		break;
+	case '5':
+		type = GW552x;
+		break;
 	default:
 		printf("EEPROM: Unknown model in EEPROM: %s\n", info->model);
 		type = GW_UNKNOWN;