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>
---
Marek: Update on top of mainline ATF/master

Add R-Car D3 DDR initialization code. The code is in staging and needs
cleanup, and possibly can even be merged with the E3 init code.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

- ddr
 - pfc [pin function controller]
 - qos [bandwidth]

checkpatch.pl is generating too many errors.