ANDROID: sched: fix duplicate sched_group_energy const specifiers

EAS uses "const struct sched_group_energy * const" fairly consistently.
But a couple of places swap the "*" and second "const", making the
pointer mutable.

In the case of struct sched_group, "* const" would have been an error,
since init_sched_energy() writes to sd->groups->sge.

Change-Id: Ic6a8fcf99e65c0f25d9cc55c32625ef3ca5c9aca
Signed-off-by: Greg Hackmann <ghackmann@google.com>