No sources were ever added to the `zephyr_library()` defined in
modules/hal_nxp/usb/CMakeLists.txt, thus removing this lib to avoid
the warning:
> No SOURCES given to Zephyr library: modules__hal_nxp__usb
>
> Excluding target from build.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
Update zephyr side to handle hal_nxp using cmake-ext/kconfig-ext. This
allows for having zephyr specific integration code live with the zephyr
source tree.
For now on the cmake side we just use add_subdirectory() of the hal_nxp
repo so the integration is effectively transparent.
For Kconfig we add a place holder Kconfig file since the hal_nxp repo
doesn't have any Kconfig files in it currently.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Torsten Rasmussen