cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t

Impact: Reduce memory usage, use new API.

This is part of an effort to reduce structure sizes for machines
configured with large NR_CPUS.  cpumask_t gets replaced by
cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or
struct cpumask * (large NR_CPUS).

(Changes to powernow-k* by <travis>.)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 3795590..0574add 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -127,7 +127,7 @@
 	unsigned int state_count;
 	struct acpi_processor_px *states;
 	struct acpi_psd_package domain_info;
-	cpumask_t shared_cpu_map;
+	cpumask_var_t shared_cpu_map;
 	unsigned int shared_type;
 };
 
@@ -172,7 +172,7 @@
 	unsigned int state_count;
 	struct acpi_processor_tx_tss *states_tss;
 	struct acpi_tsd_package domain_info;
-	cpumask_t shared_cpu_map;
+	cpumask_var_t shared_cpu_map;
 	int (*acpi_processor_get_throttling) (struct acpi_processor * pr);
 	int (*acpi_processor_set_throttling) (struct acpi_processor * pr,
 					      int state);