* With the changes introduced by the commit
If04e19891e778d1203241b03f398022400a531c8,
the new integer overlay contains the device
configuration for LEDs in a bit field
* However if a device does not set this value,
the build will fail with the following error
"String types not allowed (... with value '')."
* Therefore define the overlay to the default
behaviour LIGHTS_PULSATING_LED = 8
Change-Id: I237cf2c0df856660a06bf45e8aa38a3552c8e901