selftests:firmware: fixes a call to a wrong function name

This is a patch to the tools/testing/selftests/firmware/fw_run_tests.sh
file which fixes a bug which calls to a wrong function name,which in turn
blocks the execution of certain tests.

Signed-off-by: Jeffrin Jose T <[e-mail]>
Acked-by: Kees Cook <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

tools/testing/selftests/firmware/fw_run_tests.sh

···
 	run_test_config_0003
 else
 	echo "Running basic kernel configuration, working with your config"
-	run_test
+	run_tests
 fi