arm: Move timer_rate_hz into arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/include/asm/global_data.h b/arch/arm/include/asm/global_data.h
index d147899..eb8c69a 100644
--- a/arch/arm/include/asm/global_data.h
+++ b/arch/arm/include/asm/global_data.h
@@ -35,6 +35,8 @@
 	unsigned long	pllb_rate_hz;
 	unsigned long	at91_pllb_usb_init;
 #endif
+	/* "static data" needed by most of timer.c on ARM platforms */
+	unsigned long timer_rate_hz;
 };
 
 /*
@@ -61,7 +63,6 @@
 #endif
 #ifdef CONFIG_ARM
 	/* "static data" needed by most of timer.c on ARM platforms */
-	unsigned long	timer_rate_hz;
 	unsigned long	tbl;
 	unsigned long	tbu;
 	unsigned long long	timer_reset_value;