staging: wilc1000: rename struct WILC_MsgQueueHandle

This patch removes typedef from struct WILC_MsgQueueHandle and renames
it to struct message_queue.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>