bsps/sparc: Move shared files to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

bsps/sparc/shared/amba/ambapp_depth.c

@@ -0,0 +1,25 @@
+/*
+ *  AMBA Plug & Play routines
+ *
+ *  COPYRIGHT (c) 2011
+ *  Aeroflex Gaisler
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#include <ambapp.h>
+
+/* Get bus depth a device is located at */
+int ambapp_depth(struct ambapp_dev *dev)
+{
+  int depth = 0;
+
+  do {
+    dev = ambapp_find_parent(dev);
+    depth++;
+  } while (dev);
+
+  return depth - 1;
+}