Provide virtual package bluetooth-scripts

Provide virtual package bluetooth-scripts

This patch replaces previous strict and profile-specific dependency to
"bluetooth-tools-no-firmware" with virtual one to "bluetooth-scripts".

This change is necessary to resolve file conflict between this package
and board-specific firmware provided by bluetooth-firmware-bcm-*
packages.

Conflict was caused by providing following scripts:

* /etc/bluetooth/bt-dev-start.sh (or symbolic link with this name)
* /etc/bluetooth/bt-dev-end.sh

by both projects mentioned above.

Change-Id: Idba7daec43db5a63ccdfb651740f2cc5cd04c461
Signed-off-by: Maciej Wereski <m.wereski@partner.samsung.com>
Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>