arm64: dts: ti: k3-j712s2-mcu: Add the mcu domain watchdog instances

commit 56bc3115 upstream

There are totally 2 instances of watchdog module in MCU domain.
These instances are coupled with the MCU domain R5F instances.
Reserving them as they are not used by A72.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Link: https://lore.kernel.org/r/20231008044657.25788-8-j-keerthy@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>