dt-bindings: soc: samsung: keep SoC driver bindings together

Recently added Samsung Exynos USI driver devicetree bindings were added
under ../bindings/soc/samsung/exynos-usi.yaml, so move there also two
other bindings for Exynos SoC drivers: the PMU and ChipID.

Update Samsung Exynos MAINTAINERS entry to include this new path.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20211213112057.16709-1-krzysztof.kozlowski@canonical.com

Documentation/devicetree/bindings/soc/samsung/exynos-chipid.yaml

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/arm/samsung/exynos-chipid.yaml#
+$id: http://devicetree.org/schemas/soc/samsung/exynos-chipid.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Samsung Exynos SoC series Chipid driver

Documentation/devicetree/bindings/soc/samsung/exynos-pmu.yaml

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/arm/samsung/pmu.yaml#
+$id: http://devicetree.org/schemas/soc/samsung/exynos-pmu.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Samsung Exynos SoC series Power Management Unit (PMU)

MAINTAINERS

@@ -2542,6 +2542,7 @@ Q:	https://patchwork.kernel.org/project/linux-samsung-soc/list/
 F:	Documentation/arm/samsung/
 F:	Documentation/devicetree/bindings/arm/samsung/
 F:	Documentation/devicetree/bindings/power/pd-samsung.yaml
+F:	Documentation/devicetree/bindings/soc/samsung/
 F:	arch/arm/boot/dts/exynos*
 F:	arch/arm/boot/dts/s3c*
 F:	arch/arm/boot/dts/s5p*