Cactus: FFA_PARTITION_INFO_GET test.

Calls FFA_PARTITION_INFO_GET API from secure virtual FFA-A instance.
 * Gets information about primary SP.
 * Gets information about secondary SP.
 * Gets information about all SP running.
 * Attempts to get information about non-existing SP.

Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>
Change-Id: Ief4de45b4d7decb1e1dba9bdb0e7e05516062dd2
diff --git a/spm/cactus/cactus_tests.h b/spm/cactus/cactus_tests.h
index 23586f5..2e13a6f 100644
--- a/spm/cactus/cactus_tests.h
+++ b/spm/cactus/cactus_tests.h
@@ -7,6 +7,8 @@
 #ifndef CACTUS_TESTS_H
 #define CACTUS_TESTS_H
 
+#include <ffa_helpers.h>
+
 /*
  * Test functions
  */
@@ -14,7 +16,7 @@
 /*
  * Test to FFA interfaces.
  */
-void ffa_tests(void);
+void ffa_tests(struct mailbox_buffers *mb);
 
 /*
  * Test other things like the version number returned by SPM.