OMAP2/3: PRCM: split OMAP2/3-specific PRCM code into OMAP2/3-specific files

In preparation for adding OMAP4-specific PRCM accessor/mutator
functions, split the existing OMAP2/3 PRCM code into OMAP2/3-specific
files.  Most of what was in mach-omap2/{cm,prm}.{c,h} has now been
moved into mach-omap2/{cm,prm}2xxx_3xxx.{c,h}, since it was
OMAP2xxx/3xxx-specific.

This process also requires the #includes in each of these files to be
changed to reference the new file name.  As part of doing so, add some
comments into plat-omap/sram.c and plat-omap/mcbsp.c, which use
"sideways includes", to indicate that these users of the PRM/CM includes
should not be doing so.

Thanks to Felipe Contreras <[email protected]> for comments on this
patch.

Signed-off-by: Paul Walmsley <[email protected]>
Cc: Jarkko Nikula <[email protected]>
Cc: Peter Ujfalusi <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Omar Ramirez Luna <[email protected]>
Acked-by: Omar Ramirez Luna <[email protected]>
Cc: Felipe Contreras <[email protected]>
Acked-by: Felipe Contreras <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Acked-by: Mark Brown <[email protected]>
Reviewed-by: Kevin Hilman <[email protected]>
Tested-by: Kevin Hilman <[email protected]>
Tested-by: Rajendra Nayak <[email protected]>
Tested-by: Santosh Shilimkar <[email protected]>
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index a8afb61..1f5d68b 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -33,8 +33,8 @@
 #include <plat/clockdomain.h>
 #include <plat/dmtimer.h>
 
-#include "prm.h"
-#include "cm.h"
+#include "cm2xxx_3xxx.h"
+#include "prm2xxx_3xxx.h"
 #include "pm.h"
 
 int omap2_pm_debug;