[nrf fromtree] Bluetooth: Host: smp: Add function to get bonding setting

Add a function bt_get_bondable to get the bonding setting.

Signed-off-by: Lyle Zhu <[email protected]>
(cherry picked from commit c0ce5b4)

Author: lylezhu2012

include/zephyr/bluetooth/conn.h

@@ -1980,6 +1980,17 @@ static inline const char *bt_security_err_to_str(enum bt_security_err err)
  */
 void bt_set_bondable(bool enable);
 
+/** @brief Get bonding flag.
+ *
+ *  Get current bonding flag.
+ *  The initial value of this flag depends on @kconfig{CONFIG_BT_BONDABLE} Kconfig
+ *  setting.
+ *  The Bonding flag can be updated using bt_set_bondable().
+ *
+ *  @return Current bonding flag.
+ */
+bool bt_get_bondable(void);
+
 /** @brief Set/clear the bonding flag for a given connection.
  *
  *  Set/clear the Bonding flag in the Authentication Requirements of

subsys/bluetooth/host/smp.c

@@ -2639,6 +2639,11 @@ void bt_set_bondable(bool enable)
 	bondable = enable;
 }
 
+bool bt_get_bondable(void)
+{
+	return bondable;
+}
+
 void bt_le_oob_set_sc_flag(bool enable)
 {
 	sc_oobd_present = enable;