igep003x: Falcon mode

Implement spl_start_uboot to let Falcon mode work.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Heiko Schocher <hs@denx.de>
diff --git a/configs/am335x_igep003x_defconfig b/configs/am335x_igep003x_defconfig
index df7d1c6..8fc3146 100644
--- a/configs/am335x_igep003x_defconfig
+++ b/configs/am335x_igep003x_defconfig
@@ -22,6 +22,7 @@
 CONFIG_SPL_EXT_SUPPORT=y
 CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_SPL_MTD_SUPPORT=y
+CONFIG_SPL_OS_BOOT=y
 CONFIG_SPL_POWER_SUPPORT=y
 CONFIG_SPL_YMODEM_SUPPORT=y
 CONFIG_HUSH_PARSER=y