yamllint: indentation: fix dts/bindings/

Fix the YAML files indentation for files in dts/bindings/.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>

dts/bindings/riscv/openisa,rv32m1-pcc.yaml

@@ -8,11 +8,11 @@ compatible: "openisa,rv32m1-pcc"
 include: [clock-controller.yaml, base.yaml]
 
 properties:
-    reg:
-      required: true
+  reg:
+    required: true
 
-    "#clock-cells":
-      const: 1
+  "#clock-cells":
+    const: 1
 
 clock-cells:
   - name

dts/bindings/riscv/sifive-common.yaml

@@ -6,6 +6,6 @@
 include: riscv,cpus.yaml
 
 properties:
-    hardware-exec-breakpoint-count:
-      type: int
-      description: Number of hardware break points
+  hardware-exec-breakpoint-count:
+    type: int
+    description: Number of hardware break points