Avoid chacha20 header leaking its redefinitions

src/tls_chacha20.h

@@ -6,7 +6,9 @@
 
 #include "arch.h"
 #include "config.h"
+#include "tls.h"
 
+#if MG_TLS == MG_TLS_BUILTIN
 #ifndef __PORTABLE_8439_H
 #define __PORTABLE_8439_H
 #if defined(__cplusplus)
@@ -108,3 +110,4 @@ PORTABLE_8439_DECL size_t mg_chacha20_poly1305_decrypt(
 }
 #endif
 #endif
+#endif

src/tls_mbed.c

@@ -1,4 +1,6 @@
 #include "log.h"
+#include "printf.h"
+#include "profile.h"
 #include "tls.h"
 
 #if MG_TLS == MG_TLS_MBED