sched, sparc64: Turn cpu_coregroup_mask() into a real function

This compile error triggers on Sparc64:

   kernel/sched.c:7140: error: 'cpu_coregroup_mask' undeclared here (not in a function)

Because after the recent scheduler domain cleanups the scheduler
uses this arch method as a function pointer in a scheduler
topology data structure - which is not possible with a macro.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20110412140040.3020ef55.sfr@canb.auug.org.auSigned-off-by: Ingo Molnar <mingo@elte.hu>

arch/sparc/include/asm/topology_64.h

@@ -65,6 +65,10 @@ static inline int pcibus_to_node(struct pci_bus *pbus)
 #define smt_capable()				(sparc64_multi_core)
 #endif /* CONFIG_SMP */
 
-#define cpu_coregroup_mask(cpu)			(&cpu_core_map[cpu])
+extern cpumask_t cpu_core_map[NR_CPUS];
+static inline const struct cpumask *cpu_coregroup_mask(int cpu)
+{
+        return &cpu_core_map[cpu];
+}
 
 #endif /* _ASM_SPARC64_TOPOLOGY_H */