Revert "FROMLIST: dt-bindings: hypervisor: Add MediaTek GenieZone hypervisor"

This reverts commit ef382dfe.

Reason for revert:
- The GenieZone hypervisor acts as a vendor firmware to enable platform
  virtualization, offering an implementation that is independent of
  Linux-specific implementations. So, relocate dt-binding yaml file to
  the firmware path, as the dts node is used to confirm the presence of
  the geniezone hypervisor firmware.

Change-Id: I12e85e32f4306b9b95bc3a6598006d8f2d987ad3
Signed-off-by: Liju Chen <liju-clr.chen@mediatek.com>