chore: fix `clang-tidy` warnings

Fix warnings introduced by previous commit.

Change-Id: I3884f8a774860905ddf3d4554f986fde16ec9919
Signed-off-by: Karl Meakin <karl.meakin@arm.com>
diff --git a/inc/vmapi/hf/call.h b/inc/vmapi/hf/call.h
index 5886763..5e68e2e 100644
--- a/inc/vmapi/hf/call.h
+++ b/inc/vmapi/hf/call.h
@@ -19,6 +19,7 @@
 int64_t hf_call(uint64_t arg0, uint64_t arg1, uint64_t arg2, uint64_t arg3);
 struct ffa_value ffa_call(struct ffa_value args);
 struct ffa_value ffa_call_ext(struct ffa_value args);
+/* NOLINTNEXTLINE(readability-redundant-declaration) */
 void memcpy_s(void *dest, size_t destsz, const void *src, size_t count);
 
 /**