Asking a File if we could possibly read or write it will never mutate the asking FileDescription&, so it should be const.
These types can be picked up by including <AK/Types.h>: * u8, u16, u32, u64 (unsigned) * i8, i16, i32, i64 (signed)
This implements a basic 8250 UART serial port driver. It does not currently handle (or enable) interrupts, nor any runtime configuration.