uart: add 4800 baud speed
@@ -114,6 +114,7 @@ static unsigned int speed_to_uint(speed_t speedt) {
{ B1200, 1200 },
{ B1800, 1800 },
{ B2400, 2400 },
+ { B4800, 4800 },
{ B9600, 9600 },
{ B19200, 19200 },
{ B38400, 38400 },
