ANDROID: sched: allow access to critical common code for CPU Pause

Allow module access to critical functionality to support
CPU Pause from a vendor module.
The CPU Pause feature was originally part of the GKI Common code, but due
to lack of support from ARM it was decided that the feature would be
abandoned in common code. It is now implemented downstream in Qualcomm's
vendor modules.

Bug: 205164003
Change-Id: Ia04608dae076469e265071f8e0d53aee66d49cfa
Signed-off-by: Stephen Dickey <quic_dickey@quicinc.com>
Signed-off-by: Ashay Jaiswal <quic_ashayj@quicinc.com>