configs/{at91, atmel}*_defconfig: move to bluez5_utils
Commit 61a813339af43 (package/bluez_utils: drop package) removed
bluez-utils, but forgot to update the defconfigs. Fix them by changing to
bluez5-utils instead.
Fixes https://gitlab.com/buildroot.org/buildroot/-/jobs/451176867 and many
others.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>