dt-bindings: i2c: st,stm32-i2c: Make each example a separate entry

Each independent example should be a separate entry. This allows for
'interrupts' to have different cell sizes.
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220106183037.1443931-1-robh@kernel.org

Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml

@@ -112,6 +112,9 @@ examples:
           clocks = <&rcc 0 149>;
       };
 
+  - |
+    #include <dt-bindings/mfd/stm32f7-rcc.h>
+    #include <dt-bindings/clock/stm32fx-clock.h>
     //Example 2 (with st,stm32f7-i2c compatible)
       i2c@40005800 {
           compatible = "st,stm32f7-i2c";
@@ -124,6 +127,9 @@ examples:
           clocks = <&rcc 1 CLK_I2C1>;
       };
 
+  - |
+    #include <dt-bindings/mfd/stm32f7-rcc.h>
+    #include <dt-bindings/clock/stm32fx-clock.h>
     //Example 3 (with st,stm32mp15-i2c compatible on stm32mp)
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/clock/stm32mp1-clks.h>