rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/arm920t/interrupts.c b/cpu/arm920t/interrupts.c
index c9cd066..09c54db 100644
--- a/cpu/arm920t/interrupts.c
+++ b/cpu/arm920t/interrupts.c
@@ -42,7 +42,7 @@
 	/* ASSUMED to be a timer interrupt  */
 	/* Just clear it - count handled in */
 	/* integratorap.c                   */
-	*(volatile ulong *)(CFG_TIMERBASE + 0x0C) = 0;
+	*(volatile ulong *)(CONFIG_SYS_TIMERBASE + 0x0C) = 0;
 #else
 #error do_irq() not defined for this cpu type
 #endif