MIPS: IP27: Don't include <linux/topology.h> into <asm/sn/agent.h>.

The include is unecessary and will when building the IP35 result in
recursive header inclusion spaghetti.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/sn/agent.h

@@ -11,7 +11,6 @@
 #ifndef _ASM_SGI_SN_AGENT_H
 #define _ASM_SGI_SN_AGENT_H
 
-#include <linux/topology.h>
 #include <asm/sn/addrs.h>
 #include <asm/sn/arch.h>