iflight_blitz_f411_elrs: fix serial port
SPI3_PB3PB4PB5
#define USART_PORTS \
- USART1_PA9 \
- USART2_PA3PA2
+ USART2_PA3PA2 \
+ SOFT_SERIAL_PORT(1, PIN_A9, PIN_A9)
+
+#define USE_SOFT_SERIAL
// LEDS
#define LED_NUMBER 1
