Use u-boot's dtc binary in run_qemu.sh

We only use dtc when we have firmware (a.k.a. u-boot) built, so
it should be fine to use dtc from out/u-boot/

Test: script still works
Bug: 181212750
Change-Id: Idfe03b573d4620314e8f0af7faa5aede66782928
2 files changed
tree: 9fceb8e2bcdd1615e56c31840ba9c745617c84e9
  1. aarch64/
  2. crosvm/
  3. cuttlefish/
  4. kvm-unit-tests/
  5. common.inc
  6. Makefile