samples: bluetooth: hci_uart: Fix conf file name

Conf file was not renamed after board renaming.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2020-06-08 11:47:11 +02:00 committed by Carles Cufí
commit fe7ffc034e