serial: 8250_dw: Add support for big-endian MMIO accesses
Add support for UPIO_MEM32BE in addition to UPIO_MEM32. For big endian we use 2 new accessors similar to little endian, called dw8250_serial_out32be() and dw8250_serial_in32be(). Signed-off-by: NNoam Camus <noamc@ezchip.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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