arm64: dts: renesas: r8a77961: ulcb-kf: Initial device tree

Create a dedicated DTB for M3-ES3.0 + ULCB + Kingfisher combo.
Inspire from the pre-existing ULCB-KF device trees:

$ ls -1 arch/arm64/boot/dts/renesas/*ulcb-kf.dts
arch/arm64/boot/dts/renesas/r8a77950-ulcb-kf.dts
arch/arm64/boot/dts/renesas/r8a77951-ulcb-kf.dts
arch/arm64/boot/dts/renesas/r8a77960-ulcb-kf.dts
arch/arm64/boot/dts/renesas/r8a77965-ulcb-kf.dts

Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Link: https://lore.kernel.org/r/20201029133741.25721-2-erosca@de.adit-jv.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>