serial: sh-sci: Clear (H)SCIF timeout and overrun during reset
Add the missing timeout bit definition for (H)SCIF. Clear the timeout and overrun flag bits during UART reset, cfr. the initialization flowchart in the datasheet. Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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