Until now iterable sections APIs have been part of the toolchain
(common) headers. They are not strictly related to a toolchain, they
just rely on linker providing support for sections. Most files relied on
indirect includes to access the API, now, it is included as needed.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This is initial support. Necessary to test the UHC driver API,
for the USB support test implementations, and upcoming USBIP support.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>