Replace "#include <asm-$ARCH/$FILE>" with "#include <asm/$FILE>"

The appropriate include/asm-$ARCH directory should already by symlinked
to include/asm so using the whole "asm-$ARCH" path is unnecessary.

This change should also allow us to move the include/asm-$ARCH
directories into their appropriate lib/$ARCH/ directories.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/pleb2/pleb2.c b/board/pleb2/pleb2.c
index dc6fac4..97c37ea 100644
--- a/board/pleb2/pleb2.c
+++ b/board/pleb2/pleb2.c
@@ -26,7 +26,7 @@
  */
 
 #include <common.h>
-#include <asm-arm/mach-types.h>
+#include <asm/mach-types.h>
 
 DECLARE_GLOBAL_DATA_PTR;