rename CFG_ macros to CONFIG_SYS

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/leon2/serial.c b/cpu/leon2/serial.c
index ce9457f..4f41b8e 100644
--- a/cpu/leon2/serial.c
+++ b/cpu/leon2/serial.c
@@ -57,7 +57,7 @@
 	regs = (LEON2_Uart_regs *) & leon2->UART_Channel_2;
 #endif
 
-	regs->UART_Scaler = CFG_LEON2_UART1_SCALER;
+	regs->UART_Scaler = CONFIG_SYS_LEON2_UART1_SCALER;
 
 	/* Let bit 11 be unchanged (debug bit for GRMON) */
 	tmp = READ_WORD(regs->UART_Control);