iop: unconditionally initialize the ATU on platforms known to be 'hosts'

Platforms like iq80321 and iq80331 which may be host-bus-adapters
require 'iop3xx_init_atu=y' to be specified on the kernel command line.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/arch/arm/mach-iop33x/iq80332.c b/arch/arm/mach-iop33x/iq80332.c
index 416c095..4904fd7 100644
--- a/arch/arm/mach-iop33x/iq80332.c
+++ b/arch/arm/mach-iop33x/iq80332.c
@@ -89,7 +89,7 @@
 	.swizzle	= pci_std_swizzle,
 	.nr_controllers = 1,
 	.setup		= iop3xx_pci_setup,
-	.preinit	= iop3xx_pci_preinit,
+	.preinit	= iop3xx_pci_preinit_cond,
 	.scan		= iop3xx_pci_scan_bus,
 	.map_irq	= iq80332_pci_map_irq,
 };