Coherent Add/Drop

This device has an Oplink/Molex ITMA instead of the Lumentum OCM, but
that does not need any DT configuration. There's also a second TLC59116
for per-add-port status control.

LED numbering on the add-on board goes backwards, but that's not really
an issue.

Change-Id: I285b730c16934d2638c005329253b0207fa69fde
diff --git a/board/czechlight/common/overlay/usr/lib/systemd/system/cla-i2c-adt7463.service b/board/czechlight/common/overlay/usr/lib/systemd/system/cla-i2c-adt7463.service
index 50f8868..238a849 100644
--- a/board/czechlight/common/overlay/usr/lib/systemd/system/cla-i2c-adt7463.service
+++ b/board/czechlight/common/overlay/usr/lib/systemd/system/cla-i2c-adt7463.service
@@ -3,6 +3,7 @@
 ConditionKernelCommandLine=|czechlight=CL-ROADMv2
 ConditionKernelCommandLine=|czechlight=sdn-roadm-add-drop
 ConditionKernelCommandLine=|czechlight=sdn-roadm-line
+ConditionKernelCommandLine=|czechlight=sdn-roadm-coherent-a-d
 Before=sysrepod.service
 
 [Service]