bluez-utils has been removed, so use bluez5-utils instead for the
microchip_sama5d27-wlsom1_ek_mmc_dev configuration, to avoid a build
failure due to legacy options being selected.
Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/674934030
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>