avr32: Move stack_end to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/avr32/cpu/exception.c

@@ -112,11 +112,11 @@ void do_unknown_exception(unsigned int ecr, struct pt_regs *regs)
 	printf("CPU Mode: %s\n", cpu_modes[mode]);
 
 	/* Avoid exception loops */
-	if (regs->sp < (gd->stack_end - CONFIG_STACKSIZE)
-			|| regs->sp >= gd->stack_end)
+	if (regs->sp < (gd->arch.stack_end - CONFIG_STACKSIZE)
+			|| regs->sp >= gd->arch.stack_end)
 		printf("\nStack pointer seems bogus, won't do stack dump\n");
 	else
-		dump_mem("\nStack: ", regs->sp, gd->stack_end);
+		dump_mem("\nStack: ", regs->sp, gd->arch.stack_end);
 
 	panic("Unhandled exception\n");
 }

arch/avr32/include/asm/global_data.h

@@ -24,6 +24,7 @@
 
 /* Architecture-specific global data */
 struct arch_global_data {
+	unsigned long stack_end;	/* highest stack address */
 };
 
 /*
@@ -38,7 +39,6 @@ typedef	struct	global_data {
 	bd_t		*bd;
 	unsigned long	flags;
 	unsigned int	baudrate;
-	unsigned long	stack_end;	/* highest stack address */
 	unsigned long	have_console;	/* serial_init() was called */
 #ifdef CONFIG_PRE_CONSOLE_BUFFER
 	unsigned long	precon_buf_idx;	/* Pre-Console buffer index */

arch/avr32/lib/board.c

@@ -231,7 +231,7 @@ void board_init_f(ulong board_type)
 
 	/* And finally, a new, bigger stack. */
 	new_sp = (unsigned long *)addr;
-	gd->stack_end = addr;
+	gd->arch.stack_end = addr;
 	*(--new_sp) = 0;
 	*(--new_sp) = 0;