arm64: dts: ti: k3-j784s4-main: Add the main domain watchdog instances

arm64: dts: ti: k3-j784s4-main: Add the main domain watchdog instances

There are totally 19 instances of watchdog module. One each for the
8 A72 cores, one each for the 4 C7x cores, 1 for the GPU, 1 each
for the 6 R5F cores in the main domain. The non-A72 instances are
coupled with the R5Fs, C7x & GPU instances. Keeping them as reserved as
they are not used by A72.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Link: https://lore.kernel.org/r/20231008044657.25788-5-j-keerthy@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>