feat(memory share): FFA_FEATURES(FFA_MEM_RETRIEVE_REQ)

Updates tests to pass when built against
https://review.trustedfirmware.org/c/hafnium/hafnium/+/18909

Signed-off-by: Karl Meakin <karl.meakin@arm.com>
Change-Id: Ic6c39ca6916b9f9298d7668021963fec287b72c8
diff --git a/include/runtime_services/spm_common.h b/include/runtime_services/spm_common.h
index 7a81e9c..de5c254 100644
--- a/include/runtime_services/spm_common.h
+++ b/include/runtime_services/spm_common.h
@@ -55,6 +55,7 @@
 	const char *test_name;
 	unsigned int feature;
 	unsigned int expected_ret;
+	unsigned int param;
 	unsigned int version_added;
 };