Bluetooth: hci_event: Correct comment about HCI_EV_EXTENDED_INQUIRY_RESULT

HCI_EV_EXTENDED_INQUIRY_RESULT's comment wrongly uses 0x2d as its event
code.

Use right 0x2f instead.

Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>