ppc: Move mirror_hack to arch_global_data

Move this field into arch_global_data and tidy up.

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

arch/powerpc/include/asm/global_data.h

@@ -119,6 +119,9 @@ struct arch_global_data {
 #if defined(CONFIG_4xx)
 	u32 uart_clk;
 #endif /* CONFIG_4xx */
+#if defined(CONFIG_SYS_GT_6426x)
+	unsigned int mirror_hack[16];
+#endif
 };
 
 /*
@@ -148,9 +151,6 @@ typedef	struct	global_data {
 #ifdef CONFIG_PRE_CONSOLE_BUFFER
 	unsigned long	precon_buf_idx;	/* Pre-Console buffer index */
 #endif
-#if defined(CONFIG_SYS_GT_6426x)
-	unsigned int	mirror_hack[16];
-#endif
 #if defined(CONFIG_A3000)	|| \
     defined(CONFIG_HIDDEN_DRAGON)  || \
     defined(CONFIG_MUSENKI)	||  \

board/evb64260/mpsc.c

@@ -88,7 +88,7 @@ static void galsdma_enable_rx(void);
 
 
 /* GT64240A errata: cant read MPSC/BRG registers... so make mirrors in ram for read/modify write */
-#define MIRROR_HACK ((struct _tag_mirror_hack *)&(gd->mirror_hack[0]))
+#define MIRROR_HACK ((struct _tag_mirror_hack *)&(gd->arch.mirror_hack[0]))
 
 #define GT_REG_WRITE_MIRROR_G(a,d) {MIRROR_HACK->a ## _M = d; GT_REG_WRITE(a,d);}
 #define GTREGREAD_MIRROR_G(a) (MIRROR_HACK->a ## _M)