feat(plat/allwinner): add R329 support

Allwinner R329 is a new dual-core Corte-A53 SoC. Add basical TF-A
support for it, to provide a PSCI implementation containing CPU
boot/shutdown and SoC reset.

Change-Id: I0fa37ee9b4a8e0e1137bf7cf7d614b6ca9624bfe
Signed-off-by: Icenowy Zheng <icenowy@sipeed.com>
8 files changed