WonderMedia WM8850/WM8950 uses an ARM PL310 cache controller for its L2 cache, add it. The parameters have been deduced from vendor's U-boot environment variables, which the downstream code uses to initialize the controller. They set the following register values: aux = 0x3e440000 prefetch_ctrl = 0x70000007 Their initialization code also unconditionally sets the flags L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN, so encode those too Signed-off-by: Alexey Charkov <alchark@gmail.com> Link: https://lore.kernel.org/r/20250515-wmt-dts-updates-v2-5-246937484cc8@gmail.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>