[ARM] 3708/2: fix SMP build after section ioremap changes

Patch from Lennert Buytenhek

Commit ff0daca525dde796382b9ccd563f169df2571211 broke the SMP build,
this patch fixes it up again.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/ioremap.c

@@ -369,6 +369,7 @@ void __iounmap(void __iomem *addr)
 
 	addr = (void __iomem *)(PAGE_MASK & (unsigned long)addr);
 
+#ifndef CONFIG_SMP
 	/*
 	 * If this is a section based mapping we need to handle it
 	 * specially as the VM subysystem does not know how to handle
@@ -390,6 +391,7 @@ void __iounmap(void __iomem *addr)
 		}
 	}
 	write_unlock(&vmlist_lock);
+#endif
 
 	if (!section_mapping)
 		vunmap(addr);