[PATCHv2] serial: 8250_dw: Minor code cleanup

Some very minor code cleanups, such as including the bitops header for DW_UART_MCR_SIRE, use the BIT() macro as suggested by checkpatch and removed a white space to match other invocations. Signed-off-by: Olliver Schinagl --- Changes since v1: Split up these non-code

[PATCHv2] serial: 8250_dw: Minor code cleanup

Some very minor code cleanups, such as including the bitops header for DW_UART_MCR_SIRE, use the BIT() macro as suggested by checkpatch and removed a white space to match other invocations. Signed-off-by: Olliver Schinagl --- Changes since v1: Split up these non-code changing changes into a