ARM: OMAP2+: Move iopgtable header to drivers/iommu/

The iopgtable header file is only used by the iommu & iovmm drivers, so
move it to drivers/iommu/, as part of the single zImage effort.

Cc: Laurent Pinchart <[e-mail]>
Cc: Mauro Carvalho Chehab <[e-mail]>
Cc: Omar Ramirez Luna <[e-mail]>
Signed-off-by: Ido Yariv <[e-mail]>
Acked-by: Ohad Ben-Cohen <[e-mail]>
Acked-by: Joerg Roedel <[e-mail]>
[[e-mail]: updated to be earlier in the series]
Signed-off-by: Tony Lindgren <[e-mail]>

drivers/iommu/omap-iommu-debug.c

···
 #include <plat/iommu.h>
 #include <plat/iovmm.h>
 
-#include <plat/iopgtable.h>
+#include "omap-iopgtable.h"
 
 #define MAXCOLUMN 100 /* for short messages */
 

drivers/iommu/omap-iommu.c

···
 
 #include <plat/iommu.h>
 
-#include <plat/iopgtable.h>
+#include "omap-iopgtable.h"
 
 #define for_each_iotlb_cr(obj, n, __i, cr)				\
 	for (__i = 0;							\

drivers/iommu/omap-iovmm.c

···
 #include <plat/iommu.h>
 #include <plat/iovmm.h>
 
-#include <plat/iopgtable.h>
+#include "omap-iopgtable.h"
 
 static struct kmem_cache *iovm_area_cachep;