Skip unused code for accessing I/O ports: clang on non-x86 does not
handle x86 inline assembly.

Index: server/drivers/port.h
--- server/drivers/port.h.orig
+++ server/drivers/port.h
@@ -333,7 +333,7 @@ static inline int port_deny_multiple (unsigned short p
 	return i386_set_ioperm(port, count, 0);
 }
 
-#else
+#elif 0
 
 /*  ------------------------- Everything else ----------------------------- */
 /*  Last chance! Use /dev/io and i386 ASM code (BSD4.3 ?) */