ARM: tegra: Name clock and regulator nodes according to DT-schema

Name clocks and regulators according to DT-schema to fix warnings such as:

arch/arm/boot/dts/tegra20-acer-a500-picasso.dt.yaml: /: clock@0: 'anyOf' conditional failed, one must be fixed:
 	'reg' is a required property
 	'ranges' is a required property
 	From schema: /home/runner/.local/lib/python3.8/site-packages/dtschema/schemas/root-node.yaml

Signed-off-by: David Heidelberg <david@ixit.cz>

Author: okias

arch/arm/boot/dts/tegra20-trimslice.dts

@@ -445,7 +445,7 @@
 		regulator-always-on;
 	};
 
-	vdd_core: regulator@5 {
+	vdd_core: regulator-core {
 		compatible = "regulator-fixed";
 		regulator-name = "vdd_core";
 		regulator-min-microvolt = <1300000>;