Sync tf_config files with internal CI

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I064f4f252fe7d3770719dee040feb96ea180a9bb
diff --git a/tf_config/fvp-default b/tf_config/fvp-default
index 1e9dfe2..050637b 100644
--- a/tf_config/fvp-default
+++ b/tf_config/fvp-default
@@ -1,2 +1,2 @@
-CROSS_COMPILE=aarch64-linux-gnu-
+CROSS_COMPILE=aarch64-none-elf-
 PLAT=fvp