drm/radeon: fix PCC debugging message for CI DPM

Add missing newline and print the bad gpio shift.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/ci_dpm.c

@@ -5773,7 +5773,7 @@ int ci_dpm_init(struct radeon_device *rdev)
 			tmp |= DPM_ENABLED;
 			break;
 		default:
-			DRM_ERROR("Invalid PCC GPIO!");
+			DRM_ERROR("Invalid PCC GPIO: %u!\n", gpio.shift);
 			break;
 		}
 		WREG32_SMC(CNB_PWRMGT_CNTL, tmp);