USB_NATIVE_POSIX: Correct dependencies

USB_NATIVE_POSIX dependencies were partially broken for
native_sim as the option was duplicated in the boards
defconfigas.
Let's not define it also in the board Kconfig.defconfig
but instead default it to y in its main definition if
building for either native_posix[//64] or native_sim[//64]

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
3 files changed