Move to CMake 3.20.0.
At the Toolchain WG it was decided to move to CMake 3.20.0.
The main reason for increasing CMake version is better toolchain
support.
Better toolchain support is added in the following CMake versions:
- armclang, CMake 3.15
- Intel oneAPI, CMake 3.20
- IAR, CMake 3.15 and 3.20
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
This work is similar to one performed for ./net/ptp/clock/ test.
However, there is one notable extension - the check in iface_cb()
callback also checks for virtual interfaces defined in
subsys/net/l2/virtual/ipip/ipip.c. Those 'virtual' interfaces are
required for this test to be run.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
