arm64: dts: rk3399: Sync v5.7-rc1 from Linux

Sync rk3399 dts(i) files from v5.7-rc1 linux-next.

Reason:
To get updated PCIe nodes and properties on respective
dts(i) files.

Summary:
- sync won't include new board dts(i)
- sync will add required files used on respective dts(i)
- rk3399-puma-u-boot.dtsi spiflash label changed to norflash
- move puma.dtsi bios_enable into rk3399-puma-u-boot.dtsi
- move legacy max-frequency of sdhci into rk3399-u-boot.dtsi
- update cross-ec-[keyboard|sbs].dtsi path as per U-Boot
- keep roc-rk3399-pc dc_12v changes to -u-boot.dtsi

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/dts/rk3399-roc-pc.dts b/arch/arm/dts/rk3399-roc-pc.dts
index 6a909e4..cd41954 100644
--- a/arch/arm/dts/rk3399-roc-pc.dts
+++ b/arch/arm/dts/rk3399-roc-pc.dts
@@ -8,6 +8,5 @@
 
 / {
 	model = "Firefly ROC-RK3399-PC Board";
-	compatible = "libretech,roc-rk3399-pc", "firefly,roc-rk3399-pc",
-		     "rockchip,rk3399";
+	compatible = "firefly,roc-rk3399-pc", "rockchip,rk3399";
 };