1.modify sound driver, based on uboot2014-04
2.add lan9215 ipaddr, config net.
	modified:   drivers/sound/Makefile
	new file:   drivers/sound/sandbox.c
	renamed:    drivers/sound/sound.c -> drivers/sound/sound-i2s.c
	modified:   drivers/sound/sound.c
	modified:   include/configs/exynos4412.h
	modified:   include/sound.h