imx: ventana: add support for GW5908

The GW5908 is a small single board computer based on the i.MX6DL SoC
with the same peripheral set as the GW530x but with 1GiB density DRAM
(64bit 512MiB).

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 3aaf195..8580214 100644
--- a/board/gateworks/gw_ventana/eeprom.c
+++ b/board/gateworks/gw_ventana/eeprom.c
@@ -107,6 +107,8 @@
 			type = GW5906;
 		else if (info->model[4] == '0' && info->model[5] == '7')
 			type = GW5907;
+		else if (info->model[4] == '0' && info->model[5] == '8')
+			type = GW5908;
 		break;
 	}
 	return type;