fvp-linux.rootfs[+rst31]: Set lava_timeout to 19min

Normally, test runs for about 13min.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I04a0d8a36e13734e708a5b7a566b7055c613414c
diff --git a/run_config/fvp-linux.rootfs b/run_config/fvp-linux.rootfs
index 4743ed9..a624a55 100644
--- a/run_config/fvp-linux.rootfs
+++ b/run_config/fvp-linux.rootfs
@@ -12,7 +12,7 @@
 }
 
 generate_lava_job_template() {
-	uart="0" timeout="1800" file="linux-oe.exp" track_expect
+	uart="0" timeout="1800" lava_timeout="1140" file="linux-oe.exp" track_expect
 
 	payload_type="linux" gen_fvp_yaml_template
 }