dt-bindings: arm: qcom,ids: Add SoC ID for Shikra IoT variants

dt-bindings: arm: qcom,ids: Add SoC ID for Shikra IoT variants

Document the IDs used by Shikra SoC IoT variants:
- CQ2390M: Shikra Retail with modem
- CQ2390S: Shikra Retail without modem
- IQ2390S: Shikra Industrial without modem

Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260428-shikra-socid-v1-1-6ff16bad5ea2@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>