MIPS: MIPSsim: Fix uniprocessor build.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mipssim/sim_setup.c

@@ -34,6 +34,7 @@
 #include <asm/time.h>
 #include <asm/mips-boards/sim.h>
 #include <asm/mips-boards/simint.h>
+#include <asm/smp-ops.h>
 
 
 static void __init serial_init(void);