remoteproc: k3-dsp: Enable C71x support for AM62A

AM62A SoC has a single C71x DSP subsystem with analytics engine in
main voltage domain. Extend support to AM62A with compatible strings.

Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>