Some platforms don't leverage the brcm led coprocessor.
However ledinit will try to load a non existing file and exit with an
error code.
This change is a cosmetic fix mostly.
- How to verify it
Boot a platform without the configuration and verify in the syslog that the exit status of ledinit is 0
Boot a platform with the configuration and verify in the syslog that the exit status of ledinit is 0 and the leds are working.
Verified by adding a dumb led_proc_init.soc on an Arista platform which usually doesn't use it.
