Add an interconnect driver for the External Memory Interface (EMI),
voting for bus bandwidth over the Dynamic Voltage and Frequency Scaling
Resource Collector (DVFSRC).

             ICC provider         ICC Nodes
                              ----          ----
             ---------       |CPU |   |--- |VPU |
    -----   |         |-----  ----    |     ----
   |DRAM |--|DRAM     |       ----    |     ----
   |     |--|scheduler|----- |GPU |   |--- |DISP|
   |     |--|(EMI)    |       ----    |     ----
   |     |--|         |       -----   |     ----
    -----   |         |----- |MMSYS|--|--- |VDEC|
             ---------        -----   |     ----
               /|\                    |     ----
                |change DRAM freq     |--- |VENC|
             ----------               |     ----
            |  DVFSR   |              |
            |          |              |     ----
             ----------               |--- |IMG |
                                      |     ----
                                      |     ----
                                      |--- |CAM |
                                            ----
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240610085735.147134-8-angelogioacchino.delregno@collabora.comSigned-off-by: Georgi Djakov <djakov@kernel.org>