powerpc/cpumask: Refactor /proc/cpuinfo code

This separates the per cpu output from the summary output at the end of the
file, making it easier to convert to the new cpumask API in a subsequent
patch.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/setup-common.c

@@ -161,14 +161,8 @@ extern u32 cpu_temp_both(unsigned long cpu);
 DEFINE_PER_CPU(unsigned int, cpu_pvr);
 #endif
 
-static int show_cpuinfo(struct seq_file *m, void *v)
+static void show_cpuinfo_summary(struct seq_file *m)
 {
-	unsigned long cpu_id = (unsigned long)v - 1;
-	unsigned int pvr;
-	unsigned short maj;
-	unsigned short min;
-
-	if (cpu_id == NR_CPUS) {
 	struct device_node *root;
 	const char *model = NULL;
 #if defined(CONFIG_SMP) && defined(CONFIG_PPC32)
@@ -197,7 +191,17 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	seq_printf(m, "Memory\t\t: %d MB\n",
 		   (unsigned int)(total_memory / (1024 * 1024)));
 #endif
+}
 
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+	unsigned long cpu_id = (unsigned long)v - 1;
+	unsigned int pvr;
+	unsigned short maj;
+	unsigned short min;
+
+	if (cpu_id == NR_CPUS) {
+		show_cpuinfo_summary(m);
 		return 0;
 	}