esp32/help: Update to build with latest upstream MicroPython core.

dpgeorge · dpgeorge · commit 3233f9d6b7f4 · 2017-10-30T16:19:33.000+11:00
diff --git a/ports/esp32/help.c b/ports/esp32/help.c
@@ -28,7 +28,7 @@
 
 #include "py/builtin.h"
 
-const char *esp32_help_text =
+const char esp32_help_text[] =
 "Welcome to MicroPython on the ESP32!\n"
 "\n"
 "For generic online docs please visit http://docs.micropython.org/\n"
