Move lib_$ARCH directories to arch/$ARCH/lib

Also move lib_$ARCH/config.mk to arch/$ARCH/config.mk

This change is intended to clean up the top-level directory structure
and more closely mimic Linux's directory organization.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/jse/jse.c b/board/jse/jse.c
index 1849ca4..e4c7b9d 100644
--- a/board/jse/jse.c
+++ b/board/jse/jse.c
@@ -26,7 +26,7 @@
 
 /*
  * This function is run very early, out of flash, and before devices are
- * initialized. It is called by lib_ppc/board.c:board_init_f by virtue
+ * initialized. It is called by arch/ppc/lib/board.c:board_init_f by virtue
  * of being in the init_sequence array.
  *
  * The SDRAM has been initialized already -- start.S:start called
@@ -85,7 +85,7 @@
 #endif
 
 /*
- * This function is also called by lib_ppc/board.c:board_init_f (it is
+ * This function is also called by arch/ppc/lib/board.c:board_init_f (it is
  * also in the init_sequence array) but later. Many more things are
  * configured, but we are still running from flash.
  */
@@ -149,7 +149,7 @@
 /* **** No more functions called by board_init_f. **** */
 
 /*
- * This function is called by lib_ppc/board.c:board_init_r. At this
+ * This function is called by arch/ppc/lib/board.c:board_init_r. At this
  * point, basic setup is done, U-Boot has been moved into SDRAM and
  * PCI has been set up. From here we done late setup.
  */