usb_ohci.c: Fix GCC 4.6 build warnings

Fix:
usb_ohci.c: In function 'dl_transfer_length':
usb_ohci.c:756:8: warning: variable 'tdINFO' set but not used [-Wunused-but-set-variable]

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/powerpc/cpu/ppc4xx/usb_ohci.c b/arch/powerpc/cpu/ppc4xx/usb_ohci.c
index fe091e3..065730d 100644
--- a/arch/powerpc/cpu/ppc4xx/usb_ohci.c
+++ b/arch/powerpc/cpu/ppc4xx/usb_ohci.c
@@ -753,10 +753,9 @@
 
 static void dl_transfer_length(td_t * td)
 {
-	__u32 tdINFO, tdBE, tdCBP;
+	__u32 tdBE, tdCBP;
 	urb_priv_t *lurb_priv = &urb_priv;
 
-	tdINFO = ohci_cpu_to_le32 (td->hwINFO);
 	tdBE   = ohci_cpu_to_le32 (td->hwBE);
 	tdCBP  = ohci_cpu_to_le32 (td->hwCBP);