dt-bindings: Clean-up schema indentation formatting

Fix various inconsistencies in schema indentation. Most of these are
list indentation which should be 2 spaces more than the start of the
enclosing keyword. This doesn't matter functionally, but affects running
scripts which do transforms on the schema files.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/interrupt-controller/allwinner,sun7i-a20-sc-nmi.yaml

@@ -27,15 +27,15 @@ properties:
         deprecated: true
       - const: allwinner,sun7i-a20-sc-nmi
       - items:
-        - const: allwinner,sun8i-a83t-r-intc
-        - const: allwinner,sun6i-a31-r-intc
+          - const: allwinner,sun8i-a83t-r-intc
+          - const: allwinner,sun6i-a31-r-intc
       - const: allwinner,sun9i-a80-sc-nmi
       - items:
-        - const: allwinner,sun50i-a64-r-intc
-        - const: allwinner,sun6i-a31-r-intc
+          - const: allwinner,sun50i-a64-r-intc
+          - const: allwinner,sun6i-a31-r-intc
       - items:
-        - const: allwinner,sun50i-h6-r-intc
-        - const: allwinner,sun6i-a31-r-intc
+          - const: allwinner,sun50i-h6-r-intc
+          - const: allwinner,sun6i-a31-r-intc
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml

@@ -25,10 +25,10 @@ properties:
   compatible:
     items:
       - enum:
-        - intel,ixp42x-interrupt
-        - intel,ixp43x-interrupt
-        - intel,ixp45x-interrupt
-        - intel,ixp46x-interrupt
+          - intel,ixp42x-interrupt
+          - intel,ixp43x-interrupt
+          - intel,ixp45x-interrupt
+          - intel,ixp46x-interrupt
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.yaml

@@ -14,13 +14,13 @@ properties:
   compatible:
     oneOf:
       - items:
-        - enum:
-          - st,stm32-exti
-          - st,stm32h7-exti
+          - enum:
+              - st,stm32-exti
+              - st,stm32h7-exti
       - items:
-        - enum:
-          - st,stm32mp1-exti
-        - const: syscon
+          - enum:
+              - st,stm32mp1-exti
+          - const: syscon
 
   "#interrupt-cells":
     const: 2