Only permitted on exclusive sessions.

Allocations and interrupt bindings are preserved, but active and pending
DMAs are cancelled, MIPI streams are disabled, STPs are reset, and all
setup is cleared.

Bug: 67108372
Change-Id: I94d11b806b8dd160edcda6298ebf268311e11845
Signed-off-by: Sean Howarth <showarth@google.com>