tree b70e972e6f8b9be2b39a2480df59d3f9a1260731
parent d9fb61378320672bb3cebdbb9ec246087cd70b87
author Patrick Venture <venture@google.com> 1541701269 -0800
committer Patrick Venture <venture@google.com> 1541719895 -0800

firmware: tie implementation of session into write

To demonstrate how session will work, implement the write command.
Everything isn't wired up with open(), therefore this code itself will
only work in isolation.

This requires wiring up the open command to verify write will use the
handler we specify.

Change-Id: Icf5cfad4ddb531bc271642e24d505cbb9abf8f22
Signed-off-by: Patrick Venture <venture@google.com>