support wlan hotkey on Acer Travelmate 5735Z

On an Acer Travelmate 5735Z-452G32Mnss the WLAN-enable/disable key
doesn't send 0x1 as acpi event key code, but 0x3. This patch also
makes the module ignore hotkey acpi events for functions that are
already handled without. This avoids warning message "keyboard:
can't emulate rawmode for keycode 240".
Signed-off-by: Melchior FRANZ <mfranz@aon.at>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

drivers/platform/x86/acer-wmi.c

@@ -98,13 +98,26 @@ enum acer_wmi_event_ids {
 
 static const struct key_entry acer_wmi_keymap[] = {
 	{KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
+	{KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 	{KE_KEY, 0x12, {KEY_BLUETOOTH} },	/* BT */
 	{KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 	{KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 	{KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 	{KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
+	{KE_IGNORE, 0x41, {KEY_MUTE} },
+	{KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
+	{KE_IGNORE, 0x43, {KEY_NEXTSONG} },
+	{KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
+	{KE_IGNORE, 0x45, {KEY_STOP} },
+	{KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
+	{KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
+	{KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
+	{KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
+	{KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 	{KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} },	/* Display Switch */
+	{KE_IGNORE, 0x81, {KEY_SLEEP} },
 	{KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} },	/* Touch Pad On/Off */
+	{KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 	{KE_END, 0}
 };
 
@@ -1345,7 +1358,7 @@ static void acer_wmi_notify(u32 value, void *context)
 	case WMID_HOTKEY_EVENT:
 		if (return_value.device_state) {
 			u16 device_state = return_value.device_state;
-			pr_debug("deivces states: 0x%x\n", device_state);
+			pr_debug("device state: 0x%x\n", device_state);
 			if (has_cap(ACER_CAP_WIRELESS))
 				rfkill_set_sw_state(wireless_rfkill,
 				!(device_state & ACER_WMID3_GDS_WIRELESS));