[keystore2] Fix binder import path

Import from the binder crate root instead of binder::public_api for
compatibility with the new crate structure.

Test: m
Bug: 196056781
Change-Id: Ia9695e5493bda965ca9a42989ec5a284407595ce
diff --git a/diced/src/hal_node.rs b/diced/src/hal_node.rs
index fd5384f..6bc9c4a 100644
--- a/diced/src/hal_node.rs
+++ b/diced/src/hal_node.rs
@@ -33,7 +33,7 @@
     InputValues::InputValues as BinderInputValues, Signature::Signature,
 };
 use anyhow::{Context, Result};
-use binder::public_api::{BinderFeatures, Result as BinderResult, Strong};
+use binder::{BinderFeatures, Result as BinderResult, Strong};
 use dice::{ContextImpl, OpenDiceCborContext};
 use diced_open_dice_cbor as dice;
 use diced_utils as utils;