Build from U-Boot commit:
e80cbc6 rockchip: px30: tpl: updata to version 1.09
Update features:
f588f59 driver: ram: rockhip: px30: fix lpddr2 bug
ca0ddd9 rockchip: bootrom: update support for back to brom via boot_mode reg
Change-Id: Ida9455aaee4fb0b9db2f8a44be43a7376e28d74c
Signed-off-by: YouMin Chen <cym@rock-chips.com>