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>
diff --git a/plat/allwinner/common/include/sunxi_def.h b/plat/allwinner/common/include/sunxi_def.h
index f036816..ec50887 100644
--- a/plat/allwinner/common/include/sunxi_def.h
+++ b/plat/allwinner/common/include/sunxi_def.h
@@ -18,5 +18,6 @@
 #define SUNXI_SOC_H5			0x1718
 #define SUNXI_SOC_H6			0x1728
 #define SUNXI_SOC_H616			0x1823
+#define SUNXI_SOC_R329			0x1851
 
 #endif /* SUNXI_DEF_H */