dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys

dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys

TH1520 SoC is divided into several subsystems, most of them have
distinct reset controllers. Let's document reset controllers other than
the one for VO subsystem and IDs for their reset signals.

Signed-off-by: Yao Zi <ziyao@disroot.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Drew Fustini <fustini@kernel.org>
Acked-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>