AGESA F15 wrapper for Trinity

The wrapper for Trinity. Support S3. Parme is a example board.

Change-Id: Ib4f653b7562694177683e1e1ffdb27ea176aeaab
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/1156
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/northbridge/amd/agesa/Makefile.inc b/src/northbridge/amd/agesa/Makefile.inc
index eef1cd3..4587b5f 100644
--- a/src/northbridge/amd/agesa/Makefile.inc
+++ b/src/northbridge/amd/agesa/Makefile.inc
@@ -20,3 +20,4 @@
 subdirs-$(CONFIG_NORTHBRIDGE_AMD_AGESA_FAMILY12) += family12
 subdirs-$(CONFIG_NORTHBRIDGE_AMD_AGESA_FAMILY14) += family14
 subdirs-$(CONFIG_NORTHBRIDGE_AMD_AGESA_FAMILY15) += family15
+subdirs-$(CONFIG_NORTHBRIDGE_AMD_AGESA_FAMILY15_TN) += family15tn