title: no device-tree blob file (dtb) is present
body: <p>Can not figure out, why there is no dtb file under <code>arch/arm/boot/dts/</code></p>
  
  <ul>
  <li><p><code>dtc -O dtb -O test.dtb test.dts</code> debian device tree compiler works</p></li>
  <li><p><code>scripts/dtc/dtc -O dtb -O test.dtb test.dts</code> kernel device tree<br>
  compiler works too</p></li>
  <li><p><code>make dtbs</code> runs without error, but there is no dtb file present</p></li>
  </ul>
  
  <p>The output is as follows:</p>
  
  <pre><code>user1@vm:~/linux$ make dtbs
    CHK     include/config/kernel.release
    CHK     include/generated/uapi/linux/version.h
    CHK     include/generated/utsrelease.h
    CHK     include/generated/bounds.h
    CHK     include/generated/timeconst.h
    CHK     include/generated/asm-offsets.h
    CALL    scripts/checksyscalls.sh
    CHK     scripts/mod/devicetable-offsets.h
  </code></pre>
  
  <p>I am missing an output like:</p>
  
  <pre><code>DTC     arch/arm/boot/dts/test.dtb
  </code></pre>
  
  <p>Kernel 4.14, armv7, target: sc573x-ezkit.</p>
  
  <p>Any guesses?</p>