Input: i8042 - add HP Pavilion DV4270ca to the MUX blacklist

This fixes "atkbd.c: Suprious NAK on isa0060/serio0" errors for
HP Pavilion DV4270ca.
Signed-off-by: Elvis Pranskevichus <el@prans.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/serio/i8042-x86ia64io.h

@@ -210,6 +210,16 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
 			DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook ZT1000"),
 		},
 	},
+	{
+		/*
+		 * Like DV4017EA does not raise AUXERR for errors on MUX ports.
+		 */
+		.ident = "HP Pavilion DV4270ca",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EH476UA#ABL)"),
+		},
+	},
 	{
 		.ident = "Toshiba P10",
 		.matches = {