staging: ipath: ipath_init_chip: Use setup_timer

Use of the timer API function setup_timer instead of init_timer, removing
the structure field assignments, and make the codeflow more readable.
The simplified sematic patch used is :-
<smpl>

@timer@
expression e1,e2,e3,fn_ptr;
@@
-init_timer(&e1);
+setup_timer(&e1, fn_ptr, e2);
... when != fn_ptr = e3
-e1.function = fn_ptr;
-e1.data = e2;

</smpl>

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>