ANDROID: GKI: irqdomain: add bus token DOMAIN_BUS_WAKEUP

Add new bus token to describe domains that are wakeup capable.

Bug: 150638107
Change-Id: Ic1c0f0d2882a20a28aabc100835ac249c7bb4eef
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Will McVicker <willmcvicker@google.com>
(cherry picked from commit bb8e854f5cac71db3bb603b6caf58d8228b55bd6)