Tegra: include platform headers from individual makefiles

This patch modifies PLAT_INCLUDES to include individual Tegra SoC
headers from the platform's makefile.

Change-Id: If5248667f4e58ac18727d37a18fbba8e53f2d7b5
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/common/tegra_common.mk b/plat/nvidia/tegra/common/tegra_common.mk
index 66d037f..c946a75 100644
--- a/plat/nvidia/tegra/common/tegra_common.mk
+++ b/plat/nvidia/tegra/common/tegra_common.mk
@@ -6,8 +6,7 @@
 
 PLAT_INCLUDES		:=	-Iplat/nvidia/tegra/include/drivers \
 				-Iplat/nvidia/tegra/include/lib \
-				-Iplat/nvidia/tegra/include \
-				-Iplat/nvidia/tegra/include/${TARGET_SOC}
+				-Iplat/nvidia/tegra/include
 
 include lib/xlat_tables_v2/xlat_tables.mk
 PLAT_BL_COMMON_SOURCES	+=	${XLAT_TABLES_LIB_SRCS}