Remove all "supported: -hwinfo" definitions from the boards
yaml files and documentation. hwinfo can generally be tested
on every board because it returns -ENOTSUP if not supported.
Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
The old GCC ARM Embedded website on launchpad
(https://launchpad.net/gcc-arm-embedded) has been superseeded by the new
GNU Arm Embedded one
(https://developer.arm.com/open-source/gnu-toolchain/gnu-rm).
This also means a change of name from "GCC" to "GNU". Reflect this in
the enviroment variables so that the proper term is used henceforth.
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
