fix: disable FEAT_FPMR for Undef injection test

Undef injection requires FEAT_FGT to be set to 0 for testing on FVP with
all features are set FEAT_STATE_CHECK (=2). After introduction of
FEAT_FPMR (which defaults to 2) it fails to build because FPMR has
dependency on FGT.

To solve the issue, disable FPMR on undef injection build configuration.

Change-Id: I4ae907c2558b8350a6e569ce303c6a8a6fc36f4c
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
diff --git a/tf_config/fvp-undef-injection b/tf_config/fvp-undef-injection
index 5d508d9..4ba2a87 100644
--- a/tf_config/fvp-undef-injection
+++ b/tf_config/fvp-undef-injection
@@ -2,3 +2,4 @@
 CTX_INCLUDE_AARCH32_REGS=0
 PLAT=fvp
 ENABLE_FEAT_FGT=0
+ENABLE_FEAT_FPMR=0