HAL_ChibiOS: don't use STDOUT_SERIAL on mindpx-v2 or cube-red

better to use USB, giving us one more uart

libraries/AP_HAL_ChibiOS/hwdef/cube-red/hwdef.dat

@@ -16,9 +16,9 @@ STM32_VDD 330U
 # flash size
 FLASH_SIZE_KB 2048
 
-# serial port for stdout
+# no serial port for stdout, use USB instead
-STDOUT_SERIAL SD7
+# STDOUT_SERIAL SD7
-STDOUT_BAUDRATE 57600
+# STDOUT_BAUDRATE 57600
 
 # USB setup
 USB_VENDOR 0x2DAE # ONLY FOR USE BY HEX! NOBODY ELSE
@@ -31,7 +31,7 @@ USB_STRING_SERIAL  "%SERIAL%"
 I2C_ORDER I2C2 I2C1
 
 # order of UARTs (and USB)
-UART_ORDER OTG1 UART4 USART2 USART3 UART8
+UART_ORDER OTG1 UART4 USART2 USART3 UART8 UART7
 
 # UART for IOMCU
 IOMCU_UART USART6

libraries/AP_HAL_ChibiOS/hwdef/mindpx-v2/hwdef.dat

@@ -28,15 +28,15 @@ FLASH_RESERVE_START_KB 16
 # space to reserve for storage at end of flash
 FLASH_RESERVE_END_KB 0
 
-# serial port for stdout
+# serial port for stdout disabled, uses USB instead
-STDOUT_SERIAL SD7
+# STDOUT_SERIAL SD7
-STDOUT_BAUDRATE 57600
+# STDOUT_BAUDRATE 57600
 
 # order of I2C buses
 I2C_ORDER I2C1 I2C2
 
 # order of UARTs (and USB)
-UART_ORDER OTG1 UART4 USART2 USART3 UART8 USART1
+UART_ORDER OTG1 UART4 USART2 USART3 UART8 USART1 UART7
 
 # UART4 is GPS
 PA0 UART4_TX UART4