ideapad_laptop: Add Lenovo G40-30 to devices without radio switch

Lenovo G40-30 does not provide any physical radio switch to user.
Therefore disable the rfkill switch identically to the Yoga 2 approach.
(Note for later, models ids are sorted alphabetically).

Benefit is to make wireless available again without unloading module.

It was tested successfully on 4.1.0-rc1 base with this model:
(LENOVO_MT_80FY_BU_idea_FM_Lenovo G40-30).

BugLink: https://bugs.launchpad.net/ideapad-laptop/+bug/1450946
Cc: platform-driver-x86@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philippe Coval <rzr@gna.org>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

drivers/platform/x86/ideapad-laptop.c

@@ -829,6 +829,13 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
  * report all radios as hardware-blocked.
  */
 static const struct dmi_system_id no_hw_rfkill_list[] = {
+	{
+		.ident = "Lenovo G40-30",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo G40-30"),
+		},
+	},
 	{
 		.ident = "Lenovo Yoga 2 11 / 13 / Pro",
 		.matches = {