FVP: Revert FVP version for select models

Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Change-Id: I7303f8b45b9ad6559995d2174d3b2cf9347043d4
diff --git a/utils.sh b/utils.sh
index c42fb6d..24b9f67 100644
--- a/utils.sh
+++ b/utils.sh
@@ -300,6 +300,11 @@
 jenkins_url="${JENKINS_URL%/*}"
 jenkins_url="${jenkins_url:-https://ci.trustedfirmware.org/}"
 
+# 11.12 Model revisions
+model_version_11_12="11.12"
+model_build_11_12="38"
+model_flavour_11_12="Linux64_GCC-6.4"
+
 # Model revisions
 model_version="${model_version:-11.14}"
 model_build="${model_build:-21}"