Update IDF to a0468b2 (#2108)

* Update IDF to a0468b2

* add missing ld file

* Fix PIO builds and change coex policy

tools/sdk/include/libsodium/sodium/crypto_auth_hmacsha256.h

@@ -0,0 +1,68 @@
+#ifndef crypto_auth_hmacsha256_H
+#define crypto_auth_hmacsha256_H
+
+#include <stddef.h>
+#include "crypto_hash_sha256.h"
+#include "export.h"
+
+#ifdef __cplusplus
+# ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wlong-long"
+# endif
+extern "C" {
+#endif
+
+#define crypto_auth_hmacsha256_BYTES 32U
+SODIUM_EXPORT
+size_t crypto_auth_hmacsha256_bytes(void);
+
+#define crypto_auth_hmacsha256_KEYBYTES 32U
+SODIUM_EXPORT
+size_t crypto_auth_hmacsha256_keybytes(void);
+
+SODIUM_EXPORT
+int crypto_auth_hmacsha256(unsigned char *out,
+                           const unsigned char *in,
+                           unsigned long long inlen,
+                           const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_auth_hmacsha256_verify(const unsigned char *h,
+                                  const unsigned char *in,
+                                  unsigned long long inlen,
+                                  const unsigned char *k)
+            __attribute__ ((warn_unused_result));
+
+/* ------------------------------------------------------------------------- */
+
+typedef struct crypto_auth_hmacsha256_state {
+    crypto_hash_sha256_state ictx;
+    crypto_hash_sha256_state octx;
+} crypto_auth_hmacsha256_state;
+
+SODIUM_EXPORT
+size_t crypto_auth_hmacsha256_statebytes(void);
+
+SODIUM_EXPORT
+int crypto_auth_hmacsha256_init(crypto_auth_hmacsha256_state *state,
+                                const unsigned char *key,
+                                size_t keylen);
+
+SODIUM_EXPORT
+int crypto_auth_hmacsha256_update(crypto_auth_hmacsha256_state *state,
+                                  const unsigned char *in,
+                                  unsigned long long inlen);
+
+SODIUM_EXPORT
+int crypto_auth_hmacsha256_final(crypto_auth_hmacsha256_state *state,
+                                 unsigned char *out);
+
+
+SODIUM_EXPORT
+void crypto_auth_hmacsha256_keygen(unsigned char k[crypto_auth_hmacsha256_KEYBYTES]);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif