arm: dts: k3-j7200-binman: Add firewall configurations

The following commits adds the configuration of firewalls required to
protect ATF and OP-TEE memory region from non-secure reads and
writes using master and slave firewalls present in our K3 SOCs.

Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Tested-by: Thomas Richard <thomas.richard@bootlin.com>