This commit changes how the controllerId is generated based on device
id, and disentangles the two. The controllerId is what hawkbit uses to
uniquely identify a device, and is not necessarily the same as the
device id, and should be fully customizeable by the user if needed.
Previously, all custom device ids were being prepended with
`CONFIG_BOARD`. When a user selects `CONFIG_HAWKBIT_CUSTOM_DEVICE_ID`,
they should be able to specify the full controllerId used with hawkbit,
without a forced prepend.
Signed-off-by: Neal Jackson <neal@blueirislabs.com>
`imply` should only be used if the code can still operate without the
symbol, which is not the case. Move the ID source to a choice symbol,
which depends on `HWINFO` when required.
Signed-off-by: Jordan Yates <jordan@embeint.com>
hwinfo_get_define_id returns and ssize_t with the size og the copied
id in case of success or negative value otherwise.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
