ARM: config: USB: Tegra30/114: Fix EHCI timeout issue on "bootp"

Fix the timeout issue after running "bootp" command in u-boot
console. For example you see "EHCI timed out on TD- token=0x...".
TXFIFOTHRES bits of TXFILLTUNING register should be set to 0x10
after a controller reset and before RUN bit is set
(per technical reference manual).

Signed-off-by: Jim Lin <jilin@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

include/configs/tegra114-common.h

@@ -82,5 +82,6 @@
 
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
+#define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
 
 #endif /* _TEGRA114_COMMON_H_ */

include/configs/tegra30-common.h

@@ -79,5 +79,6 @@
 
 /* For USB EHCI controller */
 #define CONFIG_EHCI_IS_TDI
+#define CONFIG_USB_EHCI_TXFIFO_THRESH	0x10
 
 #endif /* _TEGRA30_COMMON_H_ */