bluez5_utils: version bump fixes and updates

The recent bluez5_utils version bump moved around the build options so that some builds now fail, and the help text became incorrect. This short series fixes some of these issues.

This series is mostly based on Andy Shevchenko's patch[1] with the following main changes:

* Split out the DEPRECATED handling, adding a fix to the gatttool build issue in the process

* Remove the redundant BR2_PACKAGE_BLUEZ5_UTILS_GATTTOOL config option

* Split the option addition patch into two: one for options that were previously under --enable-experimental, and one for the newly introduced midi profile

* Add missing BR2_PACKAGE_ALSA_LIB_SEQ select

[1] https://patchwork.ozlabs.org/patch/741645/

Andy Shevchenko (2):
bluez5_utils: allow enabling formerly experimental plugins
bluez5_utils: allow building the midi profile

Baruch Siach (2):
bluez5_utils: allow install of deprecated tools
bluez5_utils: correct the experimental option text

 Config.in.legacy                     |  9 +++++++++
 package/bluez5_utils/Config.in       | 39 +++++++++++++++++++++++++++---------
 package/bluez5_utils/bluez5_utils.mk | 34 ++++++++++++++++++++++++++++++-
 3 files changed, 71 insertions(+), 11 deletions(-)

2.11.0