- Change keyboard_init() timing and matrix_scan() is called in USB
startup wait loop for FC660C
- FC660C startup seems to be faster and it doesn't work without this fix
when plugin the keyboard and converter at same time
- This bug occurs when sending LED out report before keyboard becomes ready
- Ckecking with isReady() before using SetReport() solves this
- Slow startup keyboard like TMK trrigers this bug and Linux shows following error just after plugin converter
usb 3-1: device descriptor read/64, error -62
