[C12][DT][DTO] wilink: bluetooth: use hci_ll driver
For wilink bluetooth, the driver to use is BT_HCIUART_LL. In the past, btwilink plus TI_ST (kim) was used instead, but that combination is now deprecated.
REFERENCE: https://lore.kernel.org/all/20191020205901.56bafijk7cu3rpaj@earth.universe/T/
JIRA: CLEAOS-599 https://secogroup.atlassian.net/browse/CLEAOS-599
Edited by Gianfranco Mariotti