sparc: fix sparse warnings in cpu_*.c

o declare variables from cpu_*.c
o declare function from cpu_32.c

To do this introduce a new header "kernel.h" which is local to kernel/
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/cpu_32.c

@@ -15,6 +15,8 @@
 #include <asm/mbus.h>
 #include <asm/cpudata.h>
 
+#include "kernel.h"
+
 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
 
 struct cpu_iu_info {
@@ -125,8 +127,8 @@ static struct cpu_iu_info linux_sparc_chips[] = {
 
 #define NSPARCCHIPS  ARRAY_SIZE(linux_sparc_chips)
 
-char *sparc_cpu_type;
-char *sparc_fpu_type;
+const char *sparc_cpu_type;
+const char *sparc_fpu_type;
 
 unsigned int fsr_storage;
 

arch/sparc/kernel/cpu_64.c

@@ -16,6 +16,7 @@
 #include <asm/oplib.h>
 
 #include "entry.h"
+#include "kernel.h"
 
 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };
 

arch/sparc/kernel/entry.h

@@ -5,9 +5,6 @@
 #include <linux/types.h>
 #include <linux/init.h>
 
-extern const char *sparc_cpu_type;
-extern const char *sparc_fpu_type;
-
 extern void __init per_cpu_patch(void);
 extern void __init sun4v_patch(void);
 extern void __init boot_cpu_id_too_large(int cpu);

arch/sparc/kernel/kernel.h

+/* cpu.c */
+extern const char *sparc_cpu_type;
+extern const char *sparc_fpu_type;
+
+extern unsigned int fsr_storage;
+
+extern void cpu_probe(void);
+

arch/sparc/kernel/setup_32.c

@@ -46,6 +46,8 @@
 #include <asm/cpudata.h>
 #include <asm/setup.h>
 
+#include "kernel.h"
+
 struct screen_info screen_info = {
 	0, 0,			/* orig-x, orig-y */
 	0,			/* unused */
@@ -308,9 +310,6 @@ void __init setup_arch(char **cmdline_p)
 	smp_setup_cpu_possible_map();
 }
 
-extern char *sparc_cpu_type;
-extern char *sparc_fpu_type;
-
 static int ncpus_probed;
 
 static int show_cpuinfo(struct seq_file *m, void *__unused)

arch/sparc/kernel/setup_64.c

@@ -52,6 +52,7 @@
 #endif
 
 #include "entry.h"
+#include "kernel.h"
 
 /* Used to synchronize accesses to NatSemi SUPER I/O chip configure
  * operations in asm/ns87303.h