bsnprph - Add required bootutil dependency.
bsnprph - Add required bootutil dependency.

One of this app's dependencies (`boot/split`) requires the `bootloader`
API.  Provide this API with the `boot/bootutil` package.

mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core,mlaz/mynewt-core