Add test builds for FEAT_MTPMU.

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I485d5b4b93fca92f14c8968ec818fa5049942464
diff --git a/tf_config/fvp-mtpmu-disable b/tf_config/fvp-mtpmu-disable
new file mode 100644
index 0000000..4249512
--- /dev/null
+++ b/tf_config/fvp-mtpmu-disable
@@ -0,0 +1,4 @@
+ARM_ARCH_MINOR=6
+CROSS_COMPILE=aarch64-none-elf-
+DISABLE_MTPMU=1
+PLAT=fvp