[S390] enable ARCH_DMA_ADDR_T_64BIT with 64BIT

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 21a7030..068e55d 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -60,6 +60,9 @@
 config NO_DMA
 	def_bool y
 
+config ARCH_DMA_ADDR_T_64BIT
+	def_bool 64BIT
+
 config GENERIC_LOCKBREAK
 	bool
 	default y