esp32: Properly call all initializers

Note that if things break, this is probably related to the checked out GCC version (which must match the toolchain, which is probably version 5.2).

Author: aykevl

ports/esp32/main.c

@@ -9,12 +9,9 @@ esp_err_t event_handler(void *ctx, system_event_t *event)
 return ESP_OK;
 }
 
-void machine_init() __asm__("machine..import");
-
 void app_main(void)
 {
-//go_init(); // TODO
-machine_init();
+go_init();
 go_main();
 
 // sleep forever