sched: walt: Free per-cpu prev_window/curr_window upon task exit

The task's per-cpu prev_window/curr_window memory is allocated but
not freed when HMP is not defined. Move free_task_load_ptrs()
to walt.c

Change-Id: Ia70fa0cfb020f0d1b8c127eab8f68930e044e714
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
3 files changed