The parameter of callback of kernel struct hrtimer is itself, not
qdf_hrtimer_data_t. CFI failure happens if the function pointers
does not have the same type as the function that's called.
Add a new API __qdf_hrtimer_cb and assign it to hrtimer->function.
Change-Id: I9cf753272dd37635e82defac6cf7258c7a70425d
CRs-Fixed: 3245385