LU-11200 libcfs: handle DECLARE_TIMER reduced to two arguments

LU-11200 libcfs: handle DECLARE_TIMER reduced to two arguments

For the linux kernel their exist two ways to initialize a
struct timer_list. One method is with setup_timer() and the other is
with the DEFINE_TIMER macro. For earlier kernels both methods employed
callbacked with a argument of the type unsigned long. In kernels 4.15+
both methods of initialization use struct timer_list pointer for its
callback argument. During the 4.14 development phase we have
setup_timer() using struct timer_list as an argument for its callback
but DEFINE_TIMER was still using unsigned long. Additionally when
DEFINE_TIMER did move to using struct timer_list it reduced the number
of arguments to the macro. This patch handles the 4.14 kernel state of
development for the timer API.

Test-Parameters: trivial

Change-Id: I1c509838153328ed4bbdfa50468a396e13037d50
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/32939
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>