sparc: Stop setting NO_DMA.

This fixes the build with PCI disabled, we do want the
generic DMA facilities and interfaces even when just SBUS
is enabled.

Based upon a build failure report by Robert Reif.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/Kconfig

@@ -235,9 +235,6 @@ source "drivers/pci/Kconfig"
 
 endif
 
-config NO_DMA
-	def_bool !PCI
-
 config SUN_OPENPROMFS
 	tristate "Openprom tree appears in /proc/openprom"
 	help