Fix hashlib for espressif

due to mbedtls version skew, some macros need to be provided.

The espressif common-hal implementation is no longer needed.

The copyright of hashlib/__init__.h comes from micropython
extmod/modhashlib.c where I found the macro definitions.

Author: jepler

ports/espressif/common-hal/hashlib/Hash.c

@@ -25,6 +25,7 @@
  */
 
 #include "shared-bindings/hashlib/Hash.h"
+#include "shared-module/hashlib/__init__.h"
 
 #include "mbedtls/ssl.h"
 

ports/espressif/common-hal/hashlib/Hash.h

@@ -25,6 +25,7 @@
  */
 
 #include "shared-bindings/hashlib/__init__.h"
+#include "shared-module/hashlib/__init__.h"
 
 #include "mbedtls/ssl.h"
 

ports/espressif/common-hal/hashlib/__init__.c

@@ -0,0 +1,34 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
+ * Copyright (c) 2014 Paul Sokolovsky
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#pragma once
+
+#if MBEDTLS_VERSION_NUMBER < 0x02070000 || MBEDTLS_VERSION_NUMBER >= 0x03000000
+#define mbedtls_sha1_starts_ret mbedtls_sha1_starts
+#define mbedtls_sha1_update_ret mbedtls_sha1_update
+#define mbedtls_sha1_finish_ret mbedtls_sha1_finish
+#endif