add DeviceAuthUrl to oauth2.Endpoint

oidc/oidc.go

@@ -280,12 +280,7 @@ func (p *Provider) Claims(v interface{}) error {
 
 // Endpoint returns the OAuth2 auth and token endpoints for the given provider.
 func (p *Provider) Endpoint() oauth2.Endpoint {
-	return oauth2.Endpoint{AuthURL: p.authURL, TokenURL: p.tokenURL}
-}
-
-// DeviceEndpoint returns the OAuth2 device auth endpoint for the given provider.
-func (p *Provider) DeviceEndpoint() string {
-	return p.deviceAuthURL
+	return oauth2.Endpoint{AuthURL: p.authURL, DeviceAuthURL: p.deviceAuthURL, TokenURL: p.tokenURL}
 }
 
 // UserInfoEndpoint returns the OpenID Connect userinfo endpoint for the given