TF-M: Explicitly sets the GNUARM path

Change-Id: I632f36be4da8c2a440f409d64eed5bcc7593ae75
Signed-off-by: Matthew Dalzell <matthew.dalzell@arm.com>
diff --git a/eclair-tf-m-3.13/tf-environment.install b/eclair-tf-m-3.13/tf-environment.install
index 2483db9..53aa268 100755
--- a/eclair-tf-m-3.13/tf-environment.install
+++ b/eclair-tf-m-3.13/tf-environment.install
@@ -5,3 +5,4 @@
 env | grep ECLAIR_TOP_DIR >> /etc/environment
 env | grep ECLAIR_LICENSE_USER >> /etc/environment
 env | grep PATH >> /etc/environment
+env | grep GCC_13_2_PATH >> /etc/environment