accel/ivpu: Fix missed error message after VPU rename

Change "VPU" to "NPU" in ivpu_suspend() so it matches all other error
messages.

Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240402104929.941186-8-jacek.lawrynowicz@linux.intel.com

drivers/accel/ivpu/ivpu_pm.c

@@ -62,7 +62,7 @@ static int ivpu_suspend(struct ivpu_device *vdev)
 
 	ret = ivpu_shutdown(vdev);
 	if (ret)
-		ivpu_err(vdev, "Failed to shutdown VPU: %d\n", ret);
+		ivpu_err(vdev, "Failed to shutdown NPU: %d\n", ret);
 
 	return ret;
 }