ARM: u300: move DMA channel header into mach-u300

We were broadcasting <mach/dma_channels.h> to the entire kernel
for no reason at all, push this down into the machine folder
where it belongs.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/mach-u300/spi.c b/arch/arm/mach-u300/spi.c
index a1affac..02e6659 100644
--- a/arch/arm/mach-u300/spi.c
+++ b/arch/arm/mach-u300/spi.c
@@ -12,7 +12,7 @@
 #include <linux/amba/pl022.h>
 #include <linux/err.h>
 #include <mach/coh901318.h>
-#include <mach/dma_channels.h>
+#include "dma_channels.h"
 
 /*
  * The following is for the actual devices on the SSP/SPI bus