drm/amdkfd: Change pr_warn to pr_debug when init PeerDirect

Switch to use pr_debug instead of pr_warn to avoid message log
pollution when PeerDirect support is not available

Change-Id: I8366fab330632f144313a52ef2b99ab9cdf39bef
Signed-off-by: Serguei Sagalovitch <Serguei.Sagalovitch@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_peerdirect.c

@@ -457,7 +457,7 @@ void kfd_init_peer_direct(void)
 
 	if (!pfn_ib_register_peer_memory_client ||
 		!pfn_ib_unregister_peer_memory_client) {
-		pr_warn("amdkfd: PeerDirect interface was not detected\n");
+		pr_debug("amdkfd: PeerDirect interface was not detected\n");
 		/* Do cleanup */
 		kfd_close_peer_direct();
 		return;