ARM: dts: rmobile: Synchronize DT headers with Linux 6.1.7

ARM: dts: rmobile: Synchronize DT headers with Linux 6.1.7

Synchronize R-Car device tree headers with Linux 6.1.7,
commit 21e996306a6afaae88295858de0ffb8955173a15 .

This is only a copyright and SPDX identifier update, no
functional change.

The following script has been used for the synchronization:

$ for i in $(cd include/dt-bindings/clock/ ; ls -1 r8a*) ; do cp /linux-2.6/include/dt-bindings/clock/$i include/dt-bindings/clock/ ; done
$ for i in $(cd include/dt-bindings/power/ ; ls -1 r8a*) ; do cp /linux-2.6/include/dt-bindings/power/$i include/dt-bindings/power/ ; done

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>