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 b/run_config/fvp-linux.rootfs
index b720ae1..b1bc531 100644
--- a/run_config/fvp-linux.rootfs
+++ b/run_config/fvp-linux.rootfs
@@ -10,4 +10,6 @@
 	initrd_type="dummy-ramdisk" get_initrd
 	get_rootfs
 	uart="0" timeout="1800" file="linux-oe.exp" track_expect
+
+	payload_type="linux" gen_fvp_yaml_template
 }