ARM: mach-shark: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>

arch/arm/mach-shark/core.c

@@ -156,4 +156,5 @@ MACHINE_START(SHARK, "Shark")
 	.map_io		= shark_map_io,
 	.init_irq	= shark_init_irq,
 	.timer		= &shark_timer,
+	.dma_zone_size	= SZ_4M,
 MACHINE_END

arch/arm/mach-shark/include/mach/memory.h

@@ -17,8 +17,6 @@
  */
 #define PLAT_PHYS_OFFSET     UL(0x08000000)
 
-#define ARM_DMA_ZONE_SIZE	SZ_4M
-
 /*
  * Cache flushing area
  */