staging: brcm80211: Added support to change roaming parameters from brcmfmac driver

staging: brcm80211: Added support to change roaming parameters from brcmfmac driver

'wl_dongle_roam' function moved out of conditional compilation to allow
the fullmac driver to change FW roaming parameters

Cc: devel@linuxdriverproject.org
Cc: linux-wireless@vger.kernel.org
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>