ARM: shmobile: Remove unused mach/dma.h

Remove mach-shmobile mach/dma.h since it only
seems to be used on non-mach-shmobile platforms.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/arch/arm/mach-shmobile/include/mach/dma.h b/arch/arm/mach-shmobile/include/mach/dma.h
deleted file mode 100644
index 40a8c17..0000000
--- a/arch/arm/mach-shmobile/include/mach/dma.h
+++ /dev/null
@@ -1 +0,0 @@
-/* empty */