Linking fails on ubuntu 22.04 because of multiple definitions of the `fff` global, which is defined by `DEFINE_FFF_GLOBALS`. Only define it in the tests' `main.c` instead of the mocks. Signed-off-by: Jonathan Rico <jonathan.rico@nordicsemi.no>
Add required mocks to be able to compile and test /bluetooth/host/buf.c Signed-off-by: Ahmed Moheb <ahmed.moheb@nordicsemi.no>