android: mm: cros_camera_buffer: Fix wrong indexing in plane()

CameraBuffer::plane() should be accessed in zero based index.
Fix the wrong indexing in CameraBuffer::plane() in
cros_camera_buffer.cpp.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>

src/android/mm/cros_camera_buffer.cpp

@@ -113,13 +113,13 @@ Span<uint8_t> CameraBuffer::Private::plane(unsigned int plane)
 		break;
 	default:
 		switch (plane) {
-		case 1:
+		case 0:
 			addr = mem.ycbcr.y;
 			break;
-		case 2:
+		case 1:
 			addr = mem.ycbcr.cb;
 			break;
-		case 3:
+		case 2:
 			addr = mem.ycbcr.cr;
 			break;
 		}