ARM: dts: sh73a0: Remove CMT renesas,channels-mask

Update the DTS to remove the now deprecated "renesas,channels-mask"
property.

The channel information is now kept in the device driver and can easily
be determined based on the compat string.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v3:
  - Take over from Magnus,
  - Split in per-SoC patches,

v2:
  - Rebased on top of power-domain changes,
  - Added Acked-by and Tested-by from Geert.
1 file changed