ANDROID: Add dmabuf RSS trace event

Dmabuf RSS is associated with a task, or group of tasks sharing the same
mm_struct and files_struct. Any time the RSS counter is modified for a
task, or group of tasks, emit a trace event with the current value of
the dmabuf RSS counter.

This allows for fast tracking of per-process dmabuf RSS by userspace
analysis tools like Perfetto, compared to periodically obtaining
per-process dmabuf RSS from procfs.

Bug: 424646615
Bug: 434753952
Signed-off-by: T.J. Mercier <tjmercier@google.com>
(cherry picked from https://android-review.googlesource.com/q/commit:0f3be428ba250c5644a8e9caa85f683facf7679c)
Merged-In: Icbdf952dd07818a6224c3c787d58854c72fd4825
Change-Id: Icbdf952dd07818a6224c3c787d58854c72fd4825