bluetooth: host: Increase default cmd buffer size to 255 if using CS

sizeof(struct bt_le_cs_write_cached_remote_fae_table) = 74,
so the default value (65) was already too small in some cases.

Signed-off-by: Olivier Lesage <olivier.lesage@nordicsemi.no>

subsys/bluetooth/common/Kconfig

@@ -174,7 +174,7 @@ config BT_BUF_EVT_DISCARDABLE_COUNT
 
 config BT_BUF_CMD_TX_SIZE
 	int "Maximum support HCI Command buffer length"
-	default $(UINT8_MAX) if (BT_EXT_ADV || BT_CLASSIC || BT_ISO_CENTRAL)
+	default $(UINT8_MAX) if (BT_EXT_ADV || BT_CLASSIC || BT_ISO_CENTRAL || BT_CHANNEL_SOUNDING)
 	# LE Set Connection CTE Receive Parameters. Value required to store max allowed number
 	# of antenna ids for platforms other than Nordic.
 	default 83 if (!BT_EXT_ADV && !BT_CLASSIC && BT_CTLR_DF && BT_CTLR_DF_CONN_CTE_REQ && !SOC_COMPATIBLE_NRF)