xf86-input-vmmouse: Revert iopl() format that broke vmmouse on QEMU/KVM

This update fixes the following issue with xf86-input-vmmouse:
- bnc#863750: Revert iopl() removal that broke vmmouse on QEMU/KVM

Fixed bugs
bnc#863750
vmmouse driver isn't used on QEMU/KVM
Selected Binaries
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