Bluetooth: audio: tbs_client: Fix primary service discovery function
Bluetooth: audio: tbs_client: Fix primary service discovery function

Fixes the discovery function that handles GTBS only discovery. The
discovery stops when there is no space left for another instance. The
function has been split to improve the code readability and avoid
unnecessary UUID comparison.

Signed-off-by: Mariusz Skamra <c73850bd0bf85e95dce44c2ce1418ca55c1b6c5d@codecoup.pl>

galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr