The default channel configuration is managed within the Makefiles of many
examples and tests. This commit moves the default channel logic to
`makefiles/default-channel.ink.mk` to ease maintenance. All Makefiles that
previously managed the default channel configuration themself have been
updated to include that file.
The default channel configuration of the cc110x has been added
- Removed cc110x driver
- Updated all makefiles
- Kept both board specific configurations and support for it in RIOT's
upper layers, so re-implementations don't need to start from zero
`tests/gnrc_udp` was specifically introduced for testing the release
specs. All of them ask the tester to check the packet buffer after the
test. So it makes sense to include the module that allows for that per
default for this test so the tester does not forget to include it ;-).
Added arduino-nano to BOARD_INSUFFICIENT_MEMORY/BOARD_BLACKLIST following suit
of how arduino-uno is marked, as arduino-nano is mostly an Uno in a different
form factor.
