Bluetooth: Update security for HID Devices to Encrypt on BT On. - do not merge

This patch updates HID Devices security mask to BTA_SEC_ENCRYPT from
BTA_SEC_NONE. Without this change it was observed that on BT Reset,
authentication and encryption were not initiated by DUT for incoming
HID Control L2CAP Connection Request from remote HID Keyboard device.

Change-Id: I484fbae1294fde386bd7959467214f9968e381e9