Add langdate to LAYERSERIES_COMPAT
Add langdate to LAYERSERIES_COMPAT

Signed-off-by: Drew Moseley <9685a78bf02e8f63537877a213b2b9254bd73701@moseleynet.net>

drewmoseley/meta-dmoseley-local-config,drewmoseley/meta-dmoseley-local-config,drewmoseley/meta-dmoseley-local-config,drewmoseley/meta-dmoseley-local-config,drewmoseley/meta-dmoseley-local-config