zephyr: main.c: Only add logging support when needed

Match the conditionals of the Rust code needing the log wrappers in C
code, so that this is not brought in if there is no logging support
enabled in Zephyr.

Signed-off-by: David Brown <[email protected]>

Author: d3zd3z

main.c

@@ -10,16 +10,11 @@
 
 extern void rust_main(void);
 
+#if defined(CONFIG_LOG) && !defined(CONFIG_LOG_MINIMAL)
 // Logging, to see how things things are expanded.
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(rust, 3);
 
-int main(void)
-{
-	rust_main();
-	return 0;
-}
-
 void rust_log_message(uint32_t level, char *msg) {
 	// Ok.  The log macros in Zephyr perform all kinds of macro stitching, etc, on the
 	// arguments.  As such, we can't just pass the level to something, but actually need to
@@ -41,6 +36,13 @@ void rust_log_message(uint32_t level, char *msg) {
 		break;
 	}
 }
+#endif /* defined(CONFIG_LOG) && !defined(CONFIG_LOG_MINIMAL) */
+
+int main(void)
+{
+	rust_main();
+	return 0;
+}
 
 /* On most arches, panic is entirely macros resulting in some kind of inline assembly.  Create this
  * wrapper so the Rust panic handler can call the same kind of panic.