OvmfPkg/build.sh: Enable flash for qemu 3 or later
    
    The check for 1.[1-9][0-9].* was removed since qemu jumped to 2.0
    after 1.7.
    
    Changed 2.*.* to [2-9].*.* to match major releases 3 - 9.
    
    Added [1-9][0-9]*.*.* to match major releses >= 10.
    
    Contributed-under: TianoCore Contribution Agreement 1.1
    Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
    Reviewed-by: Laszlo Ersek <lersek@redhat.com>