Update mips sysroot creator script

tools/trusted_cross_toolchains/trusted-toolchain-creator.armhf.sh

Index: tools/trusted_cross_toolchains/trusted-toolchain-creator.armhf.sh
diff --git a/tools/trusted_cross_toolchains/trusted-toolchain-creator.armhf.sh b/tools/trusted_cross_toolchains/trusted-toolchain-creator.armhf.sh
index 1cdf05240217d8589a962685a3aabffb37eb6f8c..d6e6c0ceee7ba631125d8063eadb8c1bdca80add 100755
--- a/tools/trusted_cross_toolchains/trusted-toolchain-creator.armhf.sh
+++ b/tools/trusted_cross_toolchains/trusted-toolchain-creator.armhf.sh
@@ -397,6 +397,10 @@ UpdatePackageLists() {
   GeneratePackageList ${BASE_DEP_LIST} "${BASE_PACKAGES}"
 }
 
+help() {
+  Usage
+}
+
 if [[ $# -eq 0 ]] ; then
   echo "ERROR: you must specify a mode on the commandline"
   echo
@@ -412,3 +416,4 @@ else
   SanityCheck
   "$@"
 fi
+