ANDROID: SPED: Add symbols for vendor hook

SPED (Scheduler-based Privilege Elevation Detection) a Pixel protection
that blocks privilege elevation attacks. Before scheduling a task for
execution, it checks if there is a transition to uid/euid 0 (root) and
if so, it blocks the execution.

See aosp/3706182

1p: go/hyp-sched-lpe-detection
design (detailed): go/sped-cookbook

Bug: 403623944
Test: None

Change-Id: I48a41a47f63e1ca6e2d3140dc3fd8874d86fa18a
Signed-off-by: Kyriakos Ispoglou <ispo@google.com>