ARM: orion: Move cache-feroceon-l2.h out of plat-orion

With the gradual move to DT, kirkwood has become a lot less dependent
on plat-orion. cache-feroceon-l2.h is the last dependency. Move it out
so we can drop plat-orion when building DT only kirkwood boards.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/mm/cache-feroceon-l2.c b/arch/arm/mm/cache-feroceon-l2.c
index 48bc3c0..898362e 100644
--- a/arch/arm/mm/cache-feroceon-l2.c
+++ b/arch/arm/mm/cache-feroceon-l2.c
@@ -16,7 +16,7 @@
 #include <linux/highmem.h>
 #include <asm/cacheflush.h>
 #include <asm/cp15.h>
-#include <plat/cache-feroceon-l2.h>
+#include <asm/hardware/cache-feroceon-l2.h>
 
 /*
  * Low-level cache maintenance operations.