Symbol: UART_FLOW_CONTROL_DEVICE_PATH
usr/src/boot/efi/include/Protocol/DevicePath.h
1286
UART_FLOW_CONTROL_DEVICE_PATH UartFlowControl;
usr/src/boot/efi/include/Protocol/DevicePath.h
1342
UART_FLOW_CONTROL_DEVICE_PATH *UartFlowControl;