uniphier: support Socionext UniPhier platform

Initial commit for Socionext UniPhier SoC support.  BL1, Bl2, and
BL31 are supported.  Refer to docs/plat/socionext-uniphier.md for
more detais.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/plat/socionext/uniphier/include/plat_macros.S b/plat/socionext/uniphier/include/plat_macros.S
new file mode 100644
index 0000000..6de4dde
--- /dev/null
+++ b/plat/socionext/uniphier/include/plat_macros.S
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __PLAT_MACROS_S__
+#define __PLAT_MACROS_S__
+
+	.macro plat_crash_print_regs
+	.endm
+
+#endif /* __PLAT_MACROS_S__ */