Fn + F1 which is the shortcut for toggling the touchpad on/off sends
atkbd scancodes f7 (first press) + f8 (second press) just like on various
other Clevo models. Add the V64x_V65xAU model to the list of models where
these scancodes are mapped to touchpad-toggle.
evdev:atkbd:dmi:bvn*:bvr*:svnNotebook:pnNS50_70MU:*
evdev:atkbd:dmi:bvn*:bvr*:svnNotebook:pnNV4XMB,ME,MZ:*
evdev:atkbd:dmi:bvn*:bvr*:svnNotebook:pnNS5x_NS7xPU:*
+evdev:atkbd:dmi:bvn*:bvr*:svnNotebook:pnV64x_V65xAU:*
KEYBOARD_KEY_f7=touchpad_toggle # Touchpad Toggle
KEYBOARD_KEY_f8=touchpad_toggle # Touchpad Toggle