tests/kms_chamelium: Fix common suspend/hibernate

Currently test executes and fails even if no ports are connected to
chamelium, Added a igt_fixture to prevent that from happening.

v2 : try_suspend_resume_hpd already loops through every port (Petri)

Cc: Petri Latvala <petri.latvala@intel.com>
Signed-off-by: Kunal Joshi <kunal1.joshi@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>
diff --git a/tests/chamelium/kms_chamelium.c b/tests/chamelium/kms_chamelium.c
index d97b439..1be1c41 100644
--- a/tests/chamelium/kms_chamelium.c
+++ b/tests/chamelium/kms_chamelium.c
@@ -2945,6 +2945,11 @@
 
 	igt_describe("Tests that operate on all connectors");
 	igt_subtest_group {
+
+		igt_fixture {
+			igt_require(data.port_count);
+		}
+
 		igt_describe(test_suspend_resume_hpd_common_desc);
 		igt_subtest("common-hpd-after-suspend")
 			test_suspend_resume_hpd_common(&data,