Sync tf_config files with internal CI

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I064f4f252fe7d3770719dee040feb96ea180a9bb
diff --git a/tf_config/qemu-tbb b/tf_config/qemu-tbb
new file mode 100644
index 0000000..478f93d
--- /dev/null
+++ b/tf_config/qemu-tbb
@@ -0,0 +1,4 @@
+CROSS_COMPILE=aarch64-none-elf-
+GENERATE_COT=1
+PLAT=qemu
+TRUSTED_BOARD_BOOT=1