bluez5_utils: allow building the midi profile

The midi profile was introduced in BlueZ 5.44.

Cc: Marcin Bis <marcin@bis.org.pl>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>