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Add R-Car V3M support. This is based on the original
V3M support patch for Yocto v2.23.1 by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
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Marek: Update on top of mainline ATF/master

Add SCIF configuration specifics for the D3 SoC, that is detection
of the D3 SoC and SCBRR configuration.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

Use the SCIF SCFSR:TEND bit to check that all data were transmitted by
the SCIF and that there are no more valid data to transmit in the FIFO.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

Signed-off-by: ldts <jramirez@baylibre.com>