dt-bindings: remoteproc: Add HSM M4F core on TI K3 SoCs

dt-bindings: remoteproc: Add HSM M4F core on TI K3 SoCs

Some of the TI K3 family of SoCs have a HSM (High Security Module) M4F
core in the Wakeup Voltage Domain which could be used to run secure
services like Authentication. Add the device tree bindings document for
this HSM M4F core.

The added example illustrates the DT node for the HSM core present on K3
J722S SoC.

Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260106104755.948086-2-b-padhi@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>