dt-bindings: hwinfo: ti,k3-socinfo: Add nvmem-cells support

dt-bindings: hwinfo: ti,k3-socinfo: Add nvmem-cells support

Add optional nvmem-cells and nvmem-cell-names properties to support
reading silicon revision information from alternate location using
NVMEM providers. This is used on AM62P to read GP_SW1 register for
accurate silicon revision detection.

Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260209172330.53623-2-jm@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>