cxl/edac: Use correct format specifier for u32 val

cxl/edac: Use correct format specifier for u32 val

The dev_dbg() message in cxl_set_ecs_threshold() used %d for
an unsigned value, which could lead to incorrect logging.
Update the format specifier to %u to match variable type.

Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Reviewed-by: Shiju Jose <shiju.jose@huawei.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com?>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/20250622183919.4156343-1-alok.a.tiwari@oracle.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>