cmake: Rename CMake variable out of the reserved CONFIG_ namespace

Rename the poorly named CMake variable 'CONFIG_LIST' to
'LIST_OF_CONFIGS' to take it out of the Kconfig-reserved namespace
'CONFIG_*'.

This is a small step towards resolving #12144

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
1 file changed