arm: select HAVE_DMA_CONTIGUOUS

During a recent merge conflict, this option was removed by
mistake. Add it back.

Change-Id: Ic1a806d90a0d1ae24ed04f938e411fb1ebf4fe08
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d249f21..d7ebcfe 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -4,6 +4,7 @@
 	select HAVE_AOUT
 	select HAVE_DMA_API_DEBUG
 	select HAVE_IDE if PCI || ISA || PCMCIA
+	select HAVE_DMA_CONTIGUOUS if (CPU_V6 || CPU_V6K || CPU_V7)
 	select HAVE_DMA_ATTRS
 	select HAVE_MEMBLOCK
 	select RTC_LIB