ACPI: thinkpad-acpi: start the event hunt season

Ask users to tell us about any unhandled events they find.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/platform/x86/thinkpad_acpi.c

@@ -2801,6 +2801,9 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 		if (!known_ev) {
 			printk(TPACPI_NOTICE
 			       "unhandled HKEY event 0x%04x\n", hkey);
+			printk(TPACPI_NOTICE
+			       "please report the conditions when this "
+			       "event happened to %s\n", TPACPI_MAIL);
 		}
 
 		/* Legacy events */