serial: Add support for Qualcomm serial port

This driver works in "new" Data Mover UART mode, so
will be compatible with modern Qualcomm chips only.

Signed-off-by: Mateusz Kulikowski <mateusz.kulik

serial: Add support for Qualcomm serial port

This driver works in "new" Data Mover UART mode, so
will be compatible with modern Qualcomm chips only.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

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