arm64: dts: meson: sync dt and bindings from v5.6-rc2

Sync the device tree and dt-bindings from Linux v5.6-rc2
11a48a5a18c6 ("Linux 5.6-rc2")

The only exception to this is the mmc pinctrl pin bias of gxl SoC family.
This is a fix which found its way to u-boot but not Linux yet.

Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/dts/meson-gxl-s805x-libretech-ac.dts b/arch/arm/dts/meson-gxl-s805x-libretech-ac.dts
index 82b1c48..4d59494 100644
--- a/arch/arm/dts/meson-gxl-s805x-libretech-ac.dts
+++ b/arch/arm/dts/meson-gxl-s805x-libretech-ac.dts
@@ -14,7 +14,7 @@
 / {
 	compatible = "libretech,aml-s805x-ac", "amlogic,s805x",
 		     "amlogic,meson-gxl";
-	model = "Libre Computer Board AML-S805X-AC";
+	model = "Libre Computer AML-S805X-AC";
 
 	aliases {
 		serial0 = &uart_AO;