[POWERPC] Fix sparse warnings in arch/powerpc/kernel

Make a few things static in lparcfg.c
Make init and exit routines static in rtas_flash.c
Make things static in rtas_pci.c
Make some functions static in rtas.c
Make fops static in rtas-proc.c
Remove unneeded extern for do_gtod in smp.c
Make clocksource_init() static in time.c
Make last_tick_len and ticklen_to_xs static in time.c
Move the declaration of the pvr per-cpu into smp.h
Make kexec_smp_down() and kexec_stack static in machine_kexec_64.c
Don't return void in arch_teardown_msi_irqs() in msi.c
Move declaration of GregorianDay()into asm/time.h

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/time.h b/include/asm-powerpc/time.h
index ce5de6e..febd581 100644
--- a/include/asm-powerpc/time.h
+++ b/include/asm-powerpc/time.h
@@ -33,6 +33,7 @@
 
 struct rtc_time;
 extern void to_tm(int tim, struct rtc_time * tm);
+extern void GregorianDay(struct rtc_time *tm);
 extern time_t last_rtc_update;
 
 extern void generic_calibrate_decr(void);