ACPI: event: Use strscpy() instead of strcpy()

Replace strcpy() with strscpy() in the ACPI event driver.

strcpy() has been deprecated because it is generally unsafe, so it
is better to eliminate it from the kernel source.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Muhammad Qasim Abdul Majeed <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/event.c

···
 {
 	struct acpi_bus_event event;
 
-	strcpy(event.device_class, dev->pnp.device_class);
-	strcpy(event.bus_id, dev->pnp.bus_id);
+	strscpy(event.device_class, dev->pnp.device_class);
+	strscpy(event.bus_id, dev->pnp.bus_id);
 	event.type = type;
 	event.data = data;
 	return (blocking_notifier_call_chain(&acpi_chain_head, 0, (void *)&event)