[nrf noup] tests: bluetooth: tester: build with sysbuild

To enable common sysbuild hci_ipc build for rad core:
Kconfig.sysbuild
sysbuild/prj.conf
added for multicore devices (nRF53/54H)

Signed-off-by: Aytürk Düzen <ayturk.duzen@nordicsemi.no>

Author: AyturkDuzen

tests/bluetooth/tester/Kconfig.sysbuild

@@ -0,0 +1,10 @@
+# Copyright 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+source "${ZEPHYR_BASE}/share/sysbuild/Kconfig"
+
+config NRF_DEFAULT_IPC_RADIO
+	default y
+
+config NETCORE_IPC_RADIO_BT_HCI_IPC
+	default y

tests/bluetooth/tester/sysbuild/hci_ipc/prj.conf

@@ -0,0 +1,29 @@
+CONFIG_IPC_SERVICE=y
+CONFIG_MBOX=y
+
+CONFIG_HEAP_MEM_POOL_SIZE=8192
+
+CONFIG_MAIN_STACK_SIZE=512
+CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=512
+
+CONFIG_BT=y
+CONFIG_BT_HCI_RAW=y
+CONFIG_BT_HCI_RAW_RESERVE=1
+
+# Workaround: Unable to allocate command buffer when using K_NO_WAIT since
+# Host number of completed commands does not follow normal flow control.
+CONFIG_BT_BUF_CMD_TX_COUNT=10
+
+# Apply this overlay at hci_ipc controller build
+CONFIG_BT_CTLR_CONN_ISO_LOW_LATENCY_POLICY=y
+CONFIG_BT_CTLR_PERIPHERAL_ISO_EARLY_CIG_START=y
+CONFIG_BT_CTLR_ISOAL_PSN_IGNORE=y
+CONFIG_BT_MAX_CONN=3
+CONFIG_BT_MAX_PAIRED=3
+
+# Those have to be the same as in the controller (hci_ipc)
+CONFIG_BT_BUF_EVT_RX_COUNT=16
+CONFIG_BT_BUF_EVT_RX_SIZE=255
+CONFIG_BT_BUF_CMD_TX_SIZE=255
+CONFIG_BT_BUF_ACL_TX_SIZE=251
+CONFIG_BT_BUF_ACL_RX_SIZE=255