dts: rockchip: rk3506: enable recovery key in spl

Change-Id: If74ea3df551351ab07146ac431322cf5299750b9
Signed-off-by: Zain Wang <wzz@rock-chips.com>

rockchip: Add rk3506 Soc support

Change-Id: I344c58a3f91465fd9707d8a54349f3f1d6a3309f
Signed-off-by: Xuhui Lin <xuhui.lin@rock-chips.com>