arm64: dts: ti: k3-am62: Add watchdog nodes

Add nodes for watchdogs :
- 5 in main domain
- 1 in MCU domain
- 1 in wakeup domain

Signed-off-by: Julien Panis <jpanis@baylibre.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20230320165123.80561-3-nm@ti.com


Signed-off-by: Nishanth Menon <nm@ti.com>