serial: 8250: Add IrDA to UART capabilities
Add an IrDA UART capability flag and change the type of uart_8250_port.capabilities to be u32 rather than unsigned short to accommodate the additional flag. Signed-off-by: NEd Blake <ed.blake@imgtec.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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