Merge tag 'u-boot-rockchip-20190729' of https://gitlab.denx.de/u-boot/custodians/u-boot-rockchip

- Clean up and migrate to use common rockchip spl board file
- Clean up and migrate to use common rockchip board file
- Increase rk3288 CONFIG_SYS_BOOTM_LEN to 16MB

drivers/clk/rockchip/clk_rk3188.c

@@ -562,6 +562,9 @@ static int rk3188_clk_probe(struct udevice *dev)
 #endif
 
 	rkclk_init(priv->cru, priv->grf, priv->has_bwadj);
+
+	/* Init CPU frequency */
+	rkclk_configure_cpu(priv->cru, priv->grf, APLL_HZ, priv->has_bwadj);
 #endif
 
 	return 0;