drm/amdgpu: Adjust the SDMA doorbell info printing

Turn off the printing by default because it is not very useful, while
adding more details.
Signed-off-by: NYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

@@ -1851,7 +1851,7 @@ static int sdma_v4_0_sw_init(void *handle)
 		ring->ring_obj = NULL;
 		ring->use_doorbell = true;
 
-		DRM_INFO("use_doorbell being set to: [%s]\n",
+		DRM_DEBUG("SDMA %d use_doorbell being set to: [%s]\n", i,
 				ring->use_doorbell?"true":"false");
 
 		/* doorbell size is 2 dwords, get DWORD offset */

drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c

@@ -1260,7 +1260,7 @@ static int sdma_v5_0_sw_init(void *handle)
 		ring->ring_obj = NULL;
 		ring->use_doorbell = true;
 
-		DRM_INFO("use_doorbell being set to: [%s]\n",
+		DRM_DEBUG("SDMA %d use_doorbell being set to: [%s]\n", i,
 				ring->use_doorbell?"true":"false");
 
 		ring->doorbell_index = (i == 0) ?