ARM: OMAP: Split sram.h to local headers and minimal shared header

Most of the defines are specific to omap1 and omap2+,
and should be in the local headers. Only minimal function
prototypes need to be shared.

As discussed on linux-arm-kernel, we want to avoid
relative includes for the arch/arm/*omap* shared code:

http://www.spinics.net/lists/linux-omap/msg80520.html

So this patch re-adds a minimal plat/sram.h.

The new plat/sram.h must not be included from drivers,
that will break build for omap2+ CONFIG_MULTIPLATFORM.

Note that this patch temporarily adds two more
relative includes; Those will be removed in the
following patch.

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 70dcc22..3372929 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -20,15 +20,16 @@
 #include <linux/init.h>
 #include <linux/io.h>
 
+#include <asm/fncpy.h>
 #include <asm/tlb.h>
 #include <asm/cacheflush.h>
 
 #include <asm/mach/map.h>
 
 #include "../mach-omap1/soc.h"
+#include "../mach-omap1/sram.h"
 #include "../mach-omap2/soc.h"
-
-#include "sram.h"
+#include "../mach-omap2/sram.h"
 
 /* XXX These "sideways" includes will disappear when sram.c becomes a driver */
 #include "../mach-omap2/iomap.h"