arm64: dts: renesas: r8a779a0: Add CMT support

This patch adds CMT{0|1|2|3} device nodes for R-Car V3U (r8a779a0) SoC.

Signed-off-by: Phong Hoang <phong.hoang.wz@renesas.com>
[wsa: rebased, double checked values, corrected sorting]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20210311092939.3129-3-wsa+renesas@sang-engineering.com


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