ring_buffer: fix designated initializer order in RING_BUF_DECLARE

Change order of designated initializers for ring_buf struct in the
RING_BUF_DECLARE macro, to match the order in the struct definition.
This fixes compilation when using C++, which requires using the same
order as in the struct definition.
Fixes #45697

Signed-off-by: Jonas Otto <[email protected]>

Author: ottojo

include/zephyr/sys/ring_buffer.h

@@ -78,8 +78,8 @@ static inline void ring_buf_internal_reset(struct ring_buf *buf, int32_t value)
 		RING_BUFFER_SIZE_ASSERT_MSG); \
 	static uint8_t __noinit _ring_buffer_data_##name[size8]; \
 	struct ring_buf name = { \
-		.size = size8, \
-		.buffer = _ring_buffer_data_##name \
+		.buffer = _ring_buffer_data_##name, \
+		.size = size8 \
 	}
 
 /**