unix: add shutdown()

As sys/socket.h defines shutdown also, we can't include common.h in unix mocks.

embed/extmod/modtrezorio/unix-msg-mock.h

@@ -13,10 +13,13 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "../../unix/common.h"
 #include "../../trezorhal/usb.h"
 #include "../../trezorhal/touch.h"
 
+void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg, const char *file, int line, const char *func);
+
+#define ensure(expr, msg) (((expr) == sectrue) ? (void)0 : __fatal_error(#expr, msg, __FILE__, __LINE__, __func__))
+
 #define TREZOR_UDP_IFACE 0
 #define TREZOR_UDP_PORT 21324
 

embed/unix/common.c

@@ -31,3 +31,8 @@ void hal_delay(uint32_t ms)
 {
     usleep(1000 * ms);
 }
+
+void shutdown(void)
+{
+    exit(1);
+}

embed/unix/common.h

@@ -9,4 +9,6 @@ void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg,
 
 void hal_delay(uint32_t ms);
 
+void shutdown(void);
+
 #endif