dtc/libfdt: install missing header

Previously, only two headers were installed: libfdt.h and fdt.h.
But libfdt.h also #includes libfdt_env.h, which was not installed.

Install this missing header too.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
1 file changed