hikey: Migrate to new interfaces

- Migrate to new GIC interfaces.
- Remove unused bl1_init_bl2_mem_layout().
- Migrate to bl31_early_platform_setup2().
- Use PLAT_VIRT_ADDR_SPACE_SIZE and PLAT_PHY_ADDR_SPACE_SIZE.
- Update Makefile paths.
- Remove references to removed build options.

Change-Id: Idd1e99b4864b2a72e9e12ff1fcd73d8285bc1c94
Tested-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/plat/hisilicon/hikey/include/platform_def.h b/plat/hisilicon/hikey/include/platform_def.h
index 54be978..f2d358a 100644
--- a/plat/hisilicon/hikey/include/platform_def.h
+++ b/plat/hisilicon/hikey/include/platform_def.h
@@ -52,7 +52,8 @@
 /*
  * Platform specific page table and MMU setup constants
  */
-#define ADDR_SPACE_SIZE			(1ULL << 32)
+#define PLAT_VIRT_ADDR_SPACE_SIZE   (1ULL << 32)
+#define PLAT_PHY_ADDR_SPACE_SIZE    (1ULL << 32)
 
 #if defined(IMAGE_BL1) || defined(IMAGE_BL32)
 #define MAX_XLAT_TABLES			3