dt-bindings: sram: Add compatible for ST-Ericsson U8500 eSRAM

This adds an SoC-specific binding for the banks of eSRAM
available in the ST-Ericsson U8500.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230417-ux500-sram-v2-1-6e62ad551faa@linaro.org

Documentation/devicetree/bindings/sram/sram.yaml

@@ -94,6 +94,7 @@ patternProperties:
             - samsung,exynos4210-sysram
             - samsung,exynos4210-sysram-ns
             - socionext,milbeaut-smp-sram
+            - stericsson,u8500-esram
 
       reg:
         description: