Sync tf_config files with internal CI

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I064f4f252fe7d3770719dee040feb96ea180a9bb
diff --git a/tf_config/fvp-aarch64-sec-int-fconf b/tf_config/fvp-aarch64-sec-int-fconf
new file mode 100644
index 0000000..c991aa0
--- /dev/null
+++ b/tf_config/fvp-aarch64-sec-int-fconf
@@ -0,0 +1,3 @@
+CROSS_COMPILE=aarch64-none-elf-
+PLAT=fvp
+SEC_INT_DESC_IN_FCONF=1