move comments above config lines and enable dynamic TX power control

iso.conf

@@ -11,7 +11,8 @@ CONFIG_BT_CTLR_ADV_ISO_PDU_LEN_MAX=140
 
 # ISO Transmissions
 CONFIG_BT_CTLR_ISOAL_SOURCES=5
-CONFIG_BT_CTLR_ISO_TX_BUFFERS=2 # One of those needs to 2 to support stereo
+# One of those needs to 2 to support stereo
+CONFIG_BT_CTLR_ISO_TX_BUFFERS=2
 CONFIG_BT_CTLR_ISO_TX_BUFFER_SIZE=255
 
 CONFIG_BT_BUF_EVT_RX_SIZE=255
@@ -23,7 +24,8 @@ CONFIG_BT_CTLR_ASSERT_HANDLER=y
 CONFIG_BT_CTLR_DTM_HCI=n
 
 # Setup ISO Buffer
-CONFIG_BT_ISO_TX_BUF_COUNT=2 # One of those needs to 2 to support stereo
+# One of those needs to 2 to support stereo
+CONFIG_BT_ISO_TX_BUF_COUNT=2
 CONFIG_BT_CTLR_SDC_ISO_TX_PDU_BUFFER_PER_STREAM_COUNT=1
 CONFIG_BT_ISO_TX_MTU=140
 CONFIG_BT_ISO_RX_BUF_COUNT=10

prj.conf

@@ -13,6 +13,12 @@ CONFIG_BT=y
 CONFIG_BT_CTLR=y
 CONFIG_BT_LL_SOFTDEVICE=y
 CONFIG_BT_CTLR_TX_PWR_PLUS_8=y      # or _PLUS_8, _MINUS_4, …
+# Enable per-role/per-set dynamic TX power control via the Zephyr VS HCI
+# commands (Write/Read_TX_Power_Level). The standard
+# HCI_LE_Set_Extended_Advertising_Parameters command is honored by the SDC
+# regardless, but enabling this exposes the VS commands for read-back and
+# possible future live TX power adjustment without re-parameterizing the set.
+CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y
 
 CONFIG_BT_HCI_RAW=y
 CONFIG_BT_HCI_RAW_H4=y