micropython: Update to 1.17, reorganize package

Previous versions used a bundled version of the axTLS library. The
MicroPython project maintains their own fork[1], as development of the
library appears to have stopped (the last release was version 2.1.5 in
2019[2]).

This replaces the use of axTLS with two variants, one using mbedTLS and
one with no TLS support (and no upip, as it uses the ussl module). The
external mbedTLS patch (040-extmod-use-external-mbedtls.patch) comes
from Debian[3].

This also sets myself as the maintainer.

[1]: https://github.com/micropython/axtls
[2]: https://sourceforge.net/projects/axtls/files/
[3]: https://salsa.debian.org/yangfl-guest/micropython/-/blob/master/debian/patches/0006-extmod-Use-system-mbedtls.patch

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python/micropython/patches/040-extmod-use-external-mbedtls.patch

@@ -0,0 +1,95 @@
+From 9717338f1917fa5db63fe7c9758639417ab06f61 Mon Sep 17 00:00:00 2001
+From: yangfl <yangfl@users.noreply.github.com>
+Date: Mon, 4 Jan 2021 23:09:41 +0800
+Subject: [PATCH 06/10] extmod: Use system mbedtls
+
+---
+ extmod/extmod.mk | 77 ++----------------------------------------------
+ 1 file changed, 2 insertions(+), 75 deletions(-)
+
+--- a/extmod/extmod.mk
++++ b/extmod/extmod.mk
+@@ -66,81 +66,8 @@ SRC_MOD += $(addprefix $(AXTLS_DIR)/,\
+ 	crypto/sha1.c \
+ 	)
+ else ifeq ($(MICROPY_SSL_MBEDTLS),1)
+-MBEDTLS_DIR = lib/mbedtls
+-CFLAGS_MOD += -DMICROPY_SSL_MBEDTLS=1 -I$(TOP)/$(MBEDTLS_DIR)/include
+-SRC_MOD += $(addprefix $(MBEDTLS_DIR)/library/,\
+-	aes.c \
+-	aesni.c \
+-	arc4.c \
+-	asn1parse.c \
+-	asn1write.c \
+-	base64.c \
+-	bignum.c \
+-	blowfish.c \
+-	camellia.c \
+-	ccm.c \
+-	certs.c \
+-	chacha20.c \
+-	chachapoly.c \
+-	cipher.c \
+-	cipher_wrap.c \
+-	cmac.c \
+-	ctr_drbg.c \
+-	debug.c \
+-	des.c \
+-	dhm.c \
+-	ecdh.c \
+-	ecdsa.c \
+-	ecjpake.c \
+-	ecp.c \
+-	ecp_curves.c \
+-	entropy.c \
+-	entropy_poll.c \
+-	error.c \
+-	gcm.c \
+-	havege.c \
+-	hmac_drbg.c \
+-	md2.c \
+-	md4.c \
+-	md5.c \
+-	md.c \
+-	md_wrap.c \
+-	oid.c \
+-	padlock.c \
+-	pem.c \
+-	pk.c \
+-	pkcs11.c \
+-	pkcs12.c \
+-	pkcs5.c \
+-	pkparse.c \
+-	pk_wrap.c \
+-	pkwrite.c \
+-	platform.c \
+-	platform_util.c \
+-	poly1305.c \
+-	ripemd160.c \
+-	rsa.c \
+-	rsa_internal.c \
+-	sha1.c \
+-	sha256.c \
+-	sha512.c \
+-	ssl_cache.c \
+-	ssl_ciphersuites.c \
+-	ssl_cli.c \
+-	ssl_cookie.c \
+-	ssl_srv.c \
+-	ssl_ticket.c \
+-	ssl_tls.c \
+-	timing.c \
+-	x509.c \
+-	x509_create.c \
+-	x509_crl.c \
+-	x509_crt.c \
+-	x509_csr.c \
+-	x509write_crt.c \
+-	x509write_csr.c \
+-	xtea.c \
+-	)
++CFLAGS_MOD += -DMICROPY_SSL_MBEDTLS=1
++LDFLAGS_MOD += -lmbedx509 -lmbedtls -lmbedcrypto
+ endif
+ endif
+