Generate FVP's Linux/TFTF FVP templates

FVP YAML file generation is a two step process: 1. yaml template
creation and 2. fvp values replacement on template created by 1. This
patch only relates to 1, creating the corresponding Linux or TFTF
templates.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I1d666e6f7c38d68f66439697e599512673d874f4
diff --git a/run_config/fvp-linux.rootfs+ftpm b/run_config/fvp-linux.rootfs+ftpm
index ce346ca..530079b 100644
--- a/run_config/fvp-linux.rootfs+ftpm
+++ b/run_config/fvp-linux.rootfs+ftpm
@@ -17,4 +17,6 @@
         uart="1" timeout="600" file="tpm-logs.exp" track_expect
         set_run_env "ports_script" "$ci_root/model/ftpm-ports.awk"
         set_run_env "num_uarts" "2"
+
+	payload_type="linux" gen_fvp_yaml_template
 }