ppc64: fix atomic_dec_and_lock symbol export

arch/ppc64/kernel/idle.c

@@ -18,6 +18,7 @@
 #include <linux/unistd.h>
 #include <linux/ptrace.h>
 #include <linux/slab.h>
+#include <linux/interrupt.h>
 
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>

arch/ppc64/kernel/ppc_ksyms.c

@@ -245,8 +245,4 @@ EXPORT_SYMBOL(debugger_dabr_match);
 EXPORT_SYMBOL(debugger_fault_handler);
 #endif
 
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(atomic_dec_and_lock);
-#endif
-
 EXPORT_SYMBOL(tb_ticks_per_usec);

arch/ppc64/kernel/time.c

@@ -60,6 +60,7 @@
 
 #include <asm/time.h>
 #include <asm/ppcdebug.h>
+#include <asm/prom.h>
 
 void smp_local_timer_interrupt(struct pt_regs *);
 

arch/ppc64/lib/Makefile

@@ -4,6 +4,8 @@
 
 O_TARGET = lib.o
 
+export-objs     := dec_and_lock.o
+
 obj-y           := checksum.o dec_and_lock.o string.o strcase.o copypage.o \
 		   memcpy.o copyuser.o