arm64: dts: ti: Refactor J784s4 SoC files to a common file

[ Upstream commit 9cc161a4 ]

Refactor J784s4 SoC files to a common file which uses the
superset device to allow reuse in j742s2-evm which uses the subset part.

Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Reviewed-by: Beleswar Padhi <b-padhi@ti.com>
Reviewed-by: Udit Kumar <u-kumar1@ti.com>
Link: https://lore.kernel.org/r/20240902-b4-upstream-j742s2-v6-1-6a7aa2736797@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Stable-dep-of: 38e7f909 ("arm64: dts: ti: k3-j784s4-j742s2-main-common: Fix serdes_ln_ctrl reg-masks")
Signed-off-by: Sasha Levin <sashal@kernel.org>