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>

ARM: dts: Sync Amlogic G12A with Linux 5.3-rc1

Sync the Amlogic Meson G12A DT and Bindings file with the Linux 5.3-rc1
from the commit 5f9e832c1370 ("Linus 5.3-rc1").

Also remove the meson-g12a-u-boot.dtsi and meson-g12a-u200-u-boot.dtsi,
now conflicting with the main DT content.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Mark Kettenis <kettenis@openbsd.org>

ARM: dts: Sync Amlogic Meson AXG DT from Linux 4.20-rc1

Synchronize the Amlogic AXG Device Tree files and bindings include from
the recent Linux 4.20-rc1, because it includes patches fixing support for
U-boot.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

ARM: dts: Sync Amlogic G12A with Linux 5.3-rc1

Sync the Amlogic Meson G12A DT and Bindings file with the Linux 5.3-rc1
from the commit 5f9e832c1370 ("Linus 5.3-rc1").

Also remove the meson-g12a-u-boot.dtsi and meson-g12a-u200-u-boot.dtsi,
now conflicting with the main DT content.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Mark Kettenis <kettenis@openbsd.org>

ARM: dts: Sync Amlogic Meson AXG DT from Linux 4.20-rc1

Synchronize the Amlogic AXG Device Tree files and bindings include from
the recent Linux 4.20-rc1, because it includes patches fixing support for
U-boot.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>