drm/amdgpu: Clean up errors in vega20_ih.c

Fix the following errors reported by checkpatch:

ERROR: trailing statements should be on next line
ERROR: that open brace { should be on the previous line
Signed-off-by: Ran Sun <sunran001@208suo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vega20_ih.c

@@ -500,7 +500,8 @@ static int vega20_ih_self_irq(struct amdgpu_device *adev,
 	case 2:
 		schedule_work(&adev->irq.ih2_work);
 		break;
-	default: break;
+	default:
+		break;
 	}
 	return 0;
 }
@@ -710,8 +711,7 @@ static void vega20_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 	adev->irq.ih_funcs = &vega20_ih_funcs;
 }
 
-const struct amdgpu_ip_block_version vega20_ih_ip_block =
-{
+const struct amdgpu_ip_block_version vega20_ih_ip_block = {
 	.type = AMD_IP_BLOCK_TYPE_IH,
 	.major = 4,
 	.minor = 2,