binder: make FIFO inheritance a per-context option

Add a new ioctl to binder to control whether FIFO inheritance should happen.
In particular, hwbinder should inherit FIFO priority from callers, but standard
binder threads should not.

Test: boots

bug 36516194

Signed-off-by: Tim Murray <timmurray@google.com>
Change-Id: I8100c4364b7d15d1bf00a8ca5c286e4d4b23ce85
2 files changed