Staging: rtl8192e: Timer setup using macro rather assignment

This patch shall replaces user defined timer setup function with
standard timer setup macro. Also removes init_timer, because timer can
be initialized in setup_timer macro as well.

Signed-off-by: Gnanachandran Dhanapal <gdhanapa@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>