[ARM] Rename ISA mach/dma.h header to mach/isa-dma.h

This avoids confusion with platform specific DMA implementations in
mach/dma.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/dma.h

@@ -21,7 +21,7 @@
 
 typedef unsigned int dmach_t;
 
-#include <mach/dma.h>
+#include <mach/isa-dma.h>
 
 /*
  * DMA modes

arch/arm/mach-footbridge/include/mach/dma.h → arch/arm/mach-footbridge/include/mach/isa-dma.h

 /*
- *  arch/arm/mach-footbridge/include/mach/dma.h
+ *  arch/arm/mach-footbridge/include/mach/isa-dma.h
  *
  *  Architecture DMA routines
  *

arch/arm/mach-h720x/include/mach/dma.h → arch/arm/mach-h720x/include/mach/isa-dma.h

 /*
- * arch/arm/mach-h720x/include/mach/dma.h
+ * arch/arm/mach-h720x/include/mach/isa-dma.h
  *
  * Architecture DMA routes
  *

arch/arm/mach-rpc/include/mach/dma.h → arch/arm/mach-rpc/include/mach/isa-dma.h

 /*
- *  arch/arm/mach-rpc/include/mach/dma.h
+ *  arch/arm/mach-rpc/include/mach/isa-dma.h
  *
  *  Copyright (C) 1997 Russell King
  *

arch/arm/mach-shark/include/mach/dma.h → arch/arm/mach-shark/include/mach/isa-dma.h

 /*
- * arch/arm/mach-shark/include/mach/dma.h
+ * arch/arm/mach-shark/include/mach/isa-dma.h
  *
  * by Alexander Schulz
  */