[Core] `usb_device_state`: consolidate usb state handling across implementations (#24258)

* usb_device_state: add idle_rate, led and protocol

Previously all usb drivers and platform implementations (expect for our
oddball atsam) tracked the same two global variables:

- keyboard_protocol: to indicate if we are in report or boot protocol
- keyboard_idle: for the idle_rate of the keyboard endpoint

And a local variable that was exposed trough some indirection:

- keyboard_led_state: for the currently set indicator leds (caps lock etc.)

These have all been moved into the usb_device_state struct wich is
accessible by getters and setters.

This reduces code duplication and centralizes the state management
across platforms and drivers.

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

* usb_device_state: reset protocol on reset

The usb hid specification section 7.2.6 states:

When initialized, all devices default to report protocol. However the
host should not make any assumptions about the device’s state and should
set the desired protocol whenever initializing a device.

Thus on reset we should always do exactly that.

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

* keyboards: fix oversize warnings

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

---------

Signed-off-by: Stefan Kerkmann <karlk90@pm.me>

1 files changed, 0 insertions, 3 deletions

diff --git a/tmk_core/protocol/host.h b/tmk_core/protocol/host.h
index 959753ae02..d824fca077 100644
--- a/tmk_core/protocol/host.h
+++ b/tmk_core/protocol/host.h
@@ -27,9 +27,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 extern "C" {
 #endif
 
-extern uint8_t keyboard_idle;
-extern uint8_t keyboard_protocol;
-
 /* host driver */
 void           host_set_driver(host_driver_t *driver);
 host_driver_t *host_get_driver(void);