ramips: fix 04_led_migration case syntax for mt7621
Commit f761f4052c4 had bogus case syntax, the uci-defaults script threw
errors as a result and exited non-zero, probably didn't do what was
intended, but tried over and over since the non-zero exit prevents the
script from being deleted.
Fixes: f761f4052c41 ("ramips: mt7621: harmonize naming scheme for Mikrotik")
Signed-off-by: Russell Senior <[email protected]>
[extend commit title, add Fixes]
Signed-off-by: Adrian Schmutzler <[email protected]>
Russell Senior