tc: increase the uart timeout expectation

scp-boot-tests-coverage is using CodeCoverage fvp plugin and this plugin
slows down the execution significantly which fails the test because of
the uart timeout.
Also, scp-boot-tests fails sometimes for tc2 for the same reason.
Hence, increasing the timeout for uart trace_expect for TC.

Signed-off-by: Mohamed Omar Asaker <mohamed.omarasaker@arm.com>
Change-Id: I9f41f2298d069f322f3b652f8e81602b0400afaf
diff --git a/run_config/fvp-linux.tc b/run_config/fvp-linux.tc
index 3b22381..46df58c 100644
--- a/run_config/fvp-linux.tc
+++ b/run_config/fvp-linux.tc
@@ -65,7 +65,7 @@
 	# Hold scp terminal_s0
 	uart="0" port="5002" file="hold_uart.exp" track_expect
 	uart="2" port="5000" file="tc-fitimage-busybox.exp" set_primary="1" \
-                 track_expect
+                 timeout="1200" track_expect
 
 	set_uart_port "${archive:?}" 1 5003
 	set_uart_port "${archive:?}" 3 5001