samples: Bluetooth: hci_ipc: CI coverage for nRF5340_audio_dk cpunet

Add CI coverage for nRF5340_audio_dk cpunet in hci_ipc
sample.

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

samples/bluetooth/hci_ipc/sample.yaml

@@ -22,7 +22,6 @@ tests:
       - nrf5340bsim/nrf5340/cpunet
     integration_platforms:
       - nrf5340dk/nrf5340/cpunet
-      - nrf5340_audio_dk/nrf5340/cpunet
   sample.bluetooth.hci_ipc.iso_receive.bt_ll_sw_split:
     harness: bluetooth
     tags: bluetooth
@@ -79,6 +78,7 @@ tests:
     extra_args: CONF_FILE="nrf5340_cpunet_iso-bt_ll_sw_split.conf"
     platform_allow:
       - nrf5340dk/nrf5340/cpunet
+      - nrf5340_audio_dk/nrf5340/cpunet
       - nrf5340bsim/nrf5340/cpunet
     integration_platforms:
       - nrf5340dk/nrf5340/cpunet