ppc4xx: 405EX: Correctly enable USB pins

This patch selects the USB data pins in the 405EX GPIO and MFC (multi
function control) registers. This is done for the AMCC Kilauea and
Makalu eval boards.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/ppc405.h b/include/ppc405.h
index e5051d4..b5ad38f 100644
--- a/include/ppc405.h
+++ b/include/ppc405.h
@@ -1574,6 +1574,19 @@
 #define   SDR0_CUST0_CHIPSELGAT_EN1   0x00000004       /* Chip Select1 Gating Enable */
 #define   SDR0_CUST0_CHIPSELGAT_EN2   0x00000002       /* Chip Select2 Gating Enable */
 #define   SDR0_CUST0_CHIPSELGAT_EN3   0x00000001       /* Chip Select3 Gating Enable */
+
+#define SDR0_PFC0		0x4100
+#define SDR0_PFC1		0x4101
+#define SDR0_PFC1_U1ME		0x02000000
+#define SDR0_PFC1_U0ME		0x00080000
+#define SDR0_PFC1_U0IM		0x00040000
+#define SDR0_PFC1_SIS		0x00020000
+#define SDR0_PFC1_DMAAEN	0x00010000
+#define SDR0_PFC1_DMADEN	0x00008000
+#define SDR0_PFC1_USBEN		0x00004000
+#define SDR0_PFC1_AHBSWAP	0x00000020
+#define SDR0_PFC1_USBBIGEN	0x00000010
+#define SDR0_PFC1_GPT_FREQ	0x0000000f
 #endif
 
 #endif	/* __PPC405_H__ */