adt-installer: Set INHIBIT_DEFAULT_DEPS

adt-installer: Set INHIBIT_DEFAULT_DEPS

We've been seeing an issue on the autobuilder due to the way it builds
package feed indexes. Packages get copied into the nightly build which
then creates indexes however this is done without the knowledge of
sstate. When adt-installer is built, it has dependencies on the toolchain
and when ipk files already exist, the build throws errors.

Since this recipe doesn't need a toolchain, we can remove the dependencies
to work around this for now. I'm not particularly happy with what the
autobuilder is doing but that is a post release issue.

(From OE-Core rev: 6055263b28698a2c79c1605aca2f3810d2aa140d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>