Move ARM_ARCH_MINOR to 6 to test FEAT_MTPMU.

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I13b90c76993791258e0b0e940843246737bc2e7a
diff --git a/tf_config/fvp-mtpmu-disable b/tf_config/fvp-mtpmu-disable
index 130d164..4249512 100644
--- a/tf_config/fvp-mtpmu-disable
+++ b/tf_config/fvp-mtpmu-disable
@@ -1,4 +1,4 @@
-ARM_ARCH_MINOR=5
+ARM_ARCH_MINOR=6
 CROSS_COMPILE=aarch64-none-elf-
 DISABLE_MTPMU=1
 PLAT=fvp