dt-bindings: arm: amlogic: add GXLX/S905L/p271 reference board

dt-bindings: arm: amlogic: add GXLX/S905L/p271 reference board

Add support for an Amlogic GXLX based S905L SoC and P271 reference
design board. The S905L is a low-cost design similar to the P281
(S905W) and is similarly derived from P212 (S905X). However S905L
omits support for the VP9 codec and uses Mali 450-MP2 (not MP3).

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240604084134.3315841-1-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>