[Buildroot] [PATCH 1/1] package/dtc: qemu system build need libfdt.

[Jan Kundrát]

This change breaks U-Boot 2017.09 because now U-Boot finds a copy of libfdt 
installed by host-dtc. Yes, it's probably a bug in U-Boot that it includes 
these files via <system-path>.

Here's how U-Boot build dies for me now:

tools/fdtgrep.c:228:21: error: array type has incomplete element type
   struct fdt_region region[], int count)
                     ^

Cheers,
Jan