Fix cases where DECLARE_GLOBAL_DATA_PTR was not declared as global

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/cpu/mpc86xx/traps.c b/cpu/mpc86xx/traps.c
index c84bfbf..04c2e13 100644
--- a/cpu/mpc86xx/traps.c
+++ b/cpu/mpc86xx/traps.c
@@ -34,6 +34,8 @@
 #include <command.h>
 #include <asm/processor.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #if defined(CONFIG_CMD_KGDB)
 int (*debugger_exception_handler)(struct pt_regs *) = 0;
 #endif
@@ -50,8 +52,6 @@
 void
 print_backtrace(unsigned long *sp)
 {
-	DECLARE_GLOBAL_DATA_PTR;
-
 	int cnt = 0;
 	unsigned long i;