LIN implementation, lack of USB endpoints

[moonglow]

STM32F4 ( HS in FS mode with internal phy ) has only 6 bidirectional endpoints ( includes EP0 ) . Thats mean what LIN channel 1 will works OK ( EP5 ) and LIN channel 2 will not works at all ( EP6 ) ( but it implemented and works on hardware what will support needed count of endpoints ). Cons what this cannot be fixed on current hardware, so now it will 2 CAN + 1 LIN.