drm/amd: decrease message about missing PSP runtime database to debug

Laptops with APUs from a variety of manufacturers and generations
show a warning about a missing PSP runtime database.

As it's not required for PSP to dump this database into framebuffer,
decrease messages about it missing to debug.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

@@ -336,7 +336,7 @@ static bool psp_get_runtime_db_entry(struct amdgpu_device *adev,
 
 	if (db_header.cookie != PSP_RUNTIME_DB_COOKIE_ID) {
 		/* runtime db doesn't exist, exit */
-		dev_warn(adev->dev, "PSP runtime database doesn't exist\n");
+		dev_dbg(adev->dev, "PSP runtime database doesn't exist\n");
 		return false;
 	}