ppc4xx: Use correct io accessors for esd 405/440 boards

This patch replaces in/out8/16/32 macros by in/out_8/_be16/_be32
macros. Also volatile pointer references are replaced by the
new accessors.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/esd/du405/du405.c b/board/esd/du405/du405.c
index 3bb34fd..8e9ac28 100644
--- a/board/esd/du405/du405.c
+++ b/board/esd/du405/du405.c
@@ -188,8 +188,8 @@
 	/*
 	 * Reset external DUART via FPGA
 	 */
-	*(volatile unsigned char *) FPGA_MODE_REG = 0xff;	/* reset high active */
-	*(volatile unsigned char *) FPGA_MODE_REG = 0x00;	/* low again */
+	out_8((void *)FPGA_MODE_REG, 0xff); /* reset high active */
+	out_8((void *)FPGA_MODE_REG, 0x00); /* low again */
 
 	return 0;
 }