[ARM] CLPS7500 doesn't have IO ports

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4409561..d75879d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -171,6 +171,7 @@
 	bool "Cirrus CL-PS7500FE"
 	select TIMER_ACORN
 	select ISA
+	select NO_IOPORT
 	help
 	  Support for the Cirrus Logic PS7500FE system-on-a-chip.