platform/x86: gigabyte-wmi: Add Z690M AORUS ELITE AX DDR4 support

Add dmi_system_id of Gigabyte Z690M AORUS ELITE AX DDR4 board.
Tested on my PC.
Signed-off-by: Piotr Chmura <chmooreck@gmail.com>
Link: https://lore.kernel.org/r/bd83567e-ebf5-0b31-074b-5f6dc7f7c147@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/gigabyte-wmi.c

@@ -156,6 +156,7 @@ static const struct dmi_system_id gigabyte_wmi_known_working_platforms[] = {
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("X570 GAMING X"),
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("X570 I AORUS PRO WIFI"),
 	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("X570 UD"),
+	DMI_EXACT_MATCH_GIGABYTE_BOARD_NAME("Z690M AORUS ELITE AX DDR4"),
 	{ }
 };