serial: 8250: 8250_omap: Extend driver data to pass FIFO trigger info
Although same 8250 compliant UART IP is reused across different SoC, their integration wrt DMA varies greatly across SoCs. Therefore, different SoC may need to use different FIFO trigger level for DMA event and DMA configuration parameters. Provide a way to pass this information via driver data. This is required to support UART DMA on AM654/J721e SoCs. Signed-off-by: NVignesh Raghavendra <vigneshr@ti.com> Link: https://lore.kernel.org/r/20200319110344.21348-5-vigneshr@ti.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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