ANDROID: arch_topology: Export symbol for thermal pressure notification

Vendor cooling device driver need
arch_set_thermal_pressure/topology_set_thermal_pressure to notify
scheduler for thermal limit change.

Test: boot and check trace
Bug: 172387671
Signed-off-by: Wei Wang <wvw@google.com>
Change-Id: I777cb652a98cb4ca457ccdc9a32300aae6c2b37f
(cherry picked from commit fb068699)
Signed-off-by: Will McVicker <willmcvicker@google.com>