Input: i8042 - disable mux on Toshiba C850D

On Toshiba Satellite C850D, the touchpad and the keyboard might randomly
not work at boot. Preventing MUX mode activation solves this issue.
Signed-off-by: NAnisse Astier <anisse@astier.eu>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

drivers/input/serio/i8042-x86ia64io.h

@@ -333,6 +333,12 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "EQUIUM A110"),
 		},
 	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE C850D"),
+		},
+	},
 	{
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "ALIENWARE"),