uuid: move the uuid header from buffer.h to trace.h

uuid.h isn't needed in buffer.h. However just removing it from there
breaks compilation because of multiple trace context definitions like

DECLARE_TR_CTX(comp_tr, SOF_UUID(component_uuid), LOG_LEVEL_INFO);

in files, not explicitly including uuid.h. To make a simple fix move
the header to trace.h because that is anyway needed for all such
lines.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

src/include/sof/audio/buffer.h

@@ -16,7 +16,6 @@
 #include <rtos/panic.h>
 #include <rtos/alloc.h>
 #include <rtos/cache.h>
-#include <sof/lib/uuid.h>
 #include <sof/list.h>
 #include <sof/coherent.h>
 #include <sof/math/numbers.h>

src/include/sof/trace/trace.h

@@ -31,6 +31,9 @@
 #endif
 #include <sof/common.h>
 
+#if (defined(__ZEPHYR__) && defined(CONFIG_ZEPHYR_LOG)) || CONFIG_LIBRARY
+#include <sof/lib/uuid.h>
+#endif
 #include <sof/trace/preproc.h>
 #include <sof/trace/trace-boot.h>
 
@@ -128,6 +131,7 @@ static inline void mtrace_printf(int log_level, const char *format_str, ...)
 /**
  * Trace context.
  */
+struct sof_uuid_entry;
 struct tr_ctx {
 	const struct sof_uuid_entry *uuid_p;	/**< UUID pointer, use SOF_UUID() to init */
 	uint32_t level;				/**< Default log level */