interconnect: qcom: Allow icc node to be used across icc providers

Move the icc node ids to a common header, this will allow for
referencing/linking of icc nodes to multiple icc providers on
SDM845 SoCs.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Link: https://lore.kernel.org/r/20200227105632.15041-2-sibis@codeaurora.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>