Bluetooth: Add tracking of local and piconet clock values

This patch adds support for storing the local and piconet clock values
from the HCI_Read_Clock command response to the hci_dev and hci_conn
structs. This will be later used in another patch to implement support
for the Get Clock Info mgmt command.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 6933766..58c5930 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -1087,6 +1087,18 @@
 	__s8     rssi;
 } __packed;
 
+#define HCI_OP_READ_CLOCK		0x1407
+struct hci_cp_read_clock {
+	__le16   handle;
+	__u8     which;
+} __packed;
+struct hci_rp_read_clock {
+	__u8     status;
+	__le16   handle;
+	__le32   clock;
+	__le16   accuracy;
+} __packed;
+
 #define HCI_OP_READ_LOCAL_AMP_INFO	0x1409
 struct hci_rp_read_local_amp_info {
 	__u8     status;