imx: ventana: config: use explicit addr in loadscript

If we are loading a script to ${loadaddr} then we need to use that address
explicitly when calling the source command in case user has changed loadaddr

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

include/configs/gw_ventana.h

@@ -306,7 +306,7 @@
 	"script=6x_bootscript-ventana\0" \
 	"loadscript=" \
 		"if ${fsload} ${loadaddr} ${bootdir}/${script}; then " \
-			"source; " \
+			"source ${loadaddr}; " \
 		"fi\0" \
 	\
 	"uimage=uImage\0" \