cxl/region: Factor out cxl_switch_port_add_target()

cxl_switch_port_setup_targets() adds an endpoint's downstream port to a
port's decoder target list. For an auto region it checks that the decoder
already targets that downstream port at the next position. For a user
created region it programs the downstream port at that position. That step
is open coded.

Move that step to a new helper, cxl_switch_port_add_target(). The helper
takes the switch decoder whose target list it updates, which makes the
scope explicit.

No functional change.

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Reviewed-by: Richard Cheng <icheng@nvidia.com>
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Link: https://patch.msgid.link/0a46cfc2e9da5e92d0cc263f08b424a785c627aa.1793649898.git.alison.schofield@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

0 files changed, 0 insertions, 0 deletions