arm: serial: Add debug UART capability to the pl01x driver
This patch adds an ability to use pl01x as a debug UART. It must be configured like other types of debug UARTs Signed-off-by: NSergey Temerkhanov <s.temerkhanov@gmail.com> Signed-off-by: NRadha Mohan Chintakuntla <rchintakuntla@cavium.com> [trini: Update for _debug_uart_init change] Acked-by: NSimon Glass <sjg@chromium.org> Signed-off-by: NTom Rini <trini@konsulko.com>
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