unix/mpconfigport.h: Enable MICROPY_PY_UHASHLIB_MD5 for uhashlib.md5.

This will allow to e.g. implement HTTP Digest authentication.

Adds 540 bytes for x86_32, 332 for arm_thumb2 (for Unix port, which already
includes axTLS library).

ports/unix/mpconfigport.h

@@ -126,6 +126,7 @@
 #define MICROPY_PY_UTIMEQ           (1)
 #define MICROPY_PY_UHASHLIB         (1)
 #if MICROPY_PY_USSL
+#define MICROPY_PY_UHASHLIB_MD5     (1)
 #define MICROPY_PY_UHASHLIB_SHA1    (1)
 #define MICROPY_PY_UCRYPTOLIB       (1)
 #endif

ports/unix/mpconfigport_coverage.h

@@ -54,7 +54,6 @@
 #define MICROPY_VFS_FAT                (1)
 #define MICROPY_PY_FRAMEBUF            (1)
 #define MICROPY_PY_COLLECTIONS_NAMEDTUPLE__ASDICT (1)
-#define MICROPY_PY_UHASHLIB_MD5        (1)
 #define MICROPY_PY_UCRYPTOLIB          (1)
 
 // TODO these should be generic, not bound to fatfs