pbio/servo: reduce log data
We are only logging 9 servo values, so set accordingly to save ram.
#if PBDRV_CONFIG_NUM_MOTOR_CONTROLLER != 0
-#define SERVO_LOG_NUM_VALUES (12 + NUM_DEFAULT_LOG_VALUES)
+#define SERVO_LOG_NUM_VALUES (9 + NUM_DEFAULT_LOG_VALUES)
// TODO: Move to config and enable only known motors for platform
static pbio_control_settings_t settings_servo_ev3_medium = {
