soc: qcom: Do not expose internal servreg_location_entry_ei array

soc: qcom: Do not expose internal servreg_location_entry_ei array

'struct qmi_elem_info servreg_location_entry_ei' is used only internally
in qcom_pdr_msg.c, so drop the extern declaration to make headers
smaller and code more obvious about intention.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250121102817.68577-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>