log: Fix up debug_cond() when LOG is enabled

At present debug() statements can cause debuf output to appear when LOG is
enabled but DEBUG is not. This is not intended and it seems that the
condition is wrong.

Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/log.h

@@ -222,11 +222,14 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level,
 #define _SPL_BUILD	0
 #endif
 
-#if !_DEBUG && CONFIG_IS_ENABLED(LOG)
+#if CONFIG_IS_ENABLED(LOG)
 
-#define debug_cond(cond, fmt, args...)			\
-({							\
-	log(LOG_CATEGORY, LOGL_DEBUG, fmt, ##args);	\
+#define debug_cond(cond, fmt, args...)					\
+({									\
+	if (cond)							\
+		log(LOG_CATEGORY,					\
+		    (enum log_level_t)(LOGL_FORCE_DEBUG | _LOG_DEBUG),	\
+		    fmt, ##args);					\
 })
 
 #else /* _DEBUG */