[Installing BlueZ in OpenWRT]

Hi, I am trying to install BlueZ in OpenWRT as follows: https://wiki.openwrt.org/doc/howto/usb.bluetooth

I am using OpenWrt Chaos Calmer 15.05.1.

root@OpenWrt:~# cat /etc/*release*
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='Chaos Calmer'
DISTRIB_REVISION='unknown'
DISTRIB_CODENAME='chaos_calmer'
DISTRIB_TARGET='sunxi/generic'
DISTRIB_DESCRIPTION='OpenWrt Chaos Calmer 15.05.1'
DISTRIB_TAINTS='no-all override'
root@OpenWrt:~#
root@OpenWrt:~# opkg info kernel
Package: kernel
Version: 3.18.79-1-499d799c3868e68fe1df700ec056526c
Depends: libc
Status: install hold installed
Architecture: sunxi
Installed-Time: 1513766447

However, when I try to install bluez using:

opkg install kmod-bluetooth bluez-libs bluez-utils kmod-usb-core kmod-usb-uhci kmod-usb2 usbutils

I get the following kernel version issue:

Multiple packages (kmod-usb-core and kmod-usb-core) providing same name marked HOLD or PREFER. Using latest.
Package usbutils (007-1) installed in root is up to date.
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for kmod-bluetooth:
 *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *
 * opkg_install_cmd: Cannot install package kmod-bluetooth.
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for kmod-usb-uhci:
 *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *
 * opkg_install_cmd: Cannot install package kmod-usb-uhci.
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for kmod-usb2:
 *     kernel (= 3.18.23-1-3dbff8ef8ed26481a5d3cd9723973f43) *
 * opkg_install_cmd: Cannot install package kmod-usb2.
root@OpenWrt:~#

If anyone could provide any help on this issue, it would be really helpful.

Thanks