usb: unify ControlHandler+DeviceStateHandler, route all control requests to all handlers.

- Allows classes to handle vendor requests.
- Allows classes to use a single handler for multiple interfaces.
- Allows classes to access the other events (previously only `reset` was available).

1 files changed, 1 insertions, 0 deletions

diff --git a/embassy-usb/gen_config.py b/embassy-usb/gen_config.py
index 55a7fa3c0..67ce359cd 100644
--- a/embassy-usb/gen_config.py
+++ b/embassy-usb/gen_config.py
@@ -28,6 +28,7 @@ def feature(name, default, min, max, pow2=None):
 
 
 feature("max_interface_count", default=4, min=1, max=8)
+feature("max_handler_count", default=4, min=1, max=8)
 
 # ========= Update Cargo.toml