fix(morello): fix incorrect `fvp-morello.linux` ports

The ports script was yielding different values than we were configuring
for the `fvp-morello.linux` run configuration. This issue was missed
because it was behaving as a non-fatal error and allowing the script to
continue.

Change-Id: I92114699732911a283b6cc9028dfca77c2990b21
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/run_config/fvp-linux.morello b/run_config/fvp-linux.morello
index 6c7f1e2..20ce04f 100644
--- a/run_config/fvp-linux.morello
+++ b/run_config/fvp-linux.morello
@@ -14,9 +14,8 @@
 	uart="1" port="5003" set_primary="1" file="linux-rd-busybox.exp" \
 		track_expect
 
-	set_uart_port "${archive:?}" 0 5001
+	set_uart_port "${archive:?}" 0 5006
 	set_uart_port "${archive:?}" 2 5000
-	set_uart_port "${archive:?}" 3 5002
 
 	payload_type="linux" gen_yaml_template
 }