msm: camera: icp: Support multiple ICP subdevices

Add infrastructure to allow multiple ICP subdevices to co-exist
with each subdevice exposed to UMD individually. All operations
including ioctl on each subdevice are discrete from another's. Add
a new private field in node structure to point to which subdev
the node belongs to. Add a new ICP1 device type and expose the type
associated with ICP1 to userspace for identifying the second ICP.

Each subdevice's unique name is derived from "cam-icp". The name is
then appended with a cell-index if it exists. If there are multiple
nodes in DTSI to be probed, each node must contain cell-index to
differentiate them.

For each subdevice, it is expected to have a unique node in DTSI
with unique compatible string to probe the sd during boottime.

CRs-Fixed: 3336505
Change-Id: I615f9489d5f22b0ec37f98be3fec4c67b06a52d0
Signed-off-by: Sokchetra Eung <quic_eung@quicinc.com>

drivers/cam_icp/cam_icp_context.c

@@ -23,8 +23,6 @@
 #include "cam_req_mgr_dev.h"
 #include "cam_icp_hw_mgr_intf.h"
 
-static const char icp_dev_name[] = "cam-icp";
-
 static int cam_icp_context_dump_active_request(void *data, void *args)
 {
 	struct cam_context         *ctx = (struct cam_context *)data;
@@ -506,13 +504,16 @@ static struct cam_ctx_ops
 	},
 };
 
-int cam_icp_context_init(struct cam_icp_context *ctx,
-	struct cam_hw_mgr_intf *hw_intf, uint32_t ctx_id, int img_iommu_hdl)
+int cam_icp_context_init(struct cam_icp_context *ctx, struct cam_hw_mgr_intf *hw_intf,
+	uint32_t ctx_id, int img_iommu_hdl, const char *icp_dev_name)
 {
 	int rc;
 
-	if ((!ctx) || (!ctx->base) || (!hw_intf)) {
-		CAM_ERR(CAM_ICP, "Invalid params: %pK %pK", ctx, hw_intf);
+	if ((!ctx) || (!ctx->base) || (!hw_intf) || (!icp_dev_name)) {
+		CAM_ERR(CAM_ICP,
+			"Invalid params: ctx: %s hw intf: %s dev name: %s",
+			CAM_IS_NULL_TO_STR(ctx), CAM_IS_NULL_TO_STR(hw_intf),
+			CAM_IS_NULL_TO_STR(icp_dev_name));
 		rc = -EINVAL;
 		goto err;
 	}