ACPI: acpi_pad: rename "power_saving" thread to "acpi_pad" thread

"acpi_pad/%d" is a better thread name than
generic "power_saving/%d" because users who see
these threads will know the name of the driver
that caused them.

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index a43fa1a..1c09e1b 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -234,7 +234,7 @@
 
 	ps_tsks[ps_tsk_num] = kthread_run(power_saving_thread,
 		(void *)(unsigned long)ps_tsk_num,
-		"power_saving/%d", ps_tsk_num);
+		"acpi_pad/%d", ps_tsk_num);
 	rc = IS_ERR(ps_tsks[ps_tsk_num]) ? PTR_ERR(ps_tsks[ps_tsk_num]) : 0;
 	if (!rc)
 		ps_tsk_num++;