Thank you for taking the time to report this bug and helping to make Ubuntu better.
Trusty only ships qemu 1.7 and libfdt-dev 1.4, and the libfdt-dev in Saucy was also 1.4. So I'm not sure this should be necessary. But I don't see any harm in it, so I'll leave it to somebody closer to these packages to decide.
Thank you for taking the time to report this bug and helping to make Ubuntu better.
Trusty only ships qemu 1.7 and libfdt-dev 1.4, and the libfdt-dev in Saucy was also 1.4. So I'm not sure this should be necessary. But I don't see any harm in it, so I'll leave it to somebody closer to these packages to decide.