fvp-tftf.cactus_mm: Increase timeout to 900s

As some timeout still occur.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I10d9e1b62456ecd2908b08287a23ebccdb2615b4
diff --git a/run_config/fvp-tftf.cactus_mm b/run_config/fvp-tftf.cactus_mm
index e895eae..2d221b1 100644
--- a/run_config/fvp-tftf.cactus_mm
+++ b/run_config/fvp-tftf.cactus_mm
@@ -16,7 +16,7 @@
 }
 
 generate_lava_job_template() {
-	uart="0" lava_timeout="720" file="tftf.exp" track_expect
+	uart="0" lava_timeout="900" file="tftf.exp" track_expect
 	uart="1" file="hold_uart.exp" track_expect
 	uart="2" file="hold_uart.exp" track_expect