exynos5: common: Enable CONFIG_USB_ETHER_RTL8152 ethernet support

Enable CONFIG_USB_ETHER_RTL8152 support for Odroid XU4 which
has support for RTL8153-CG gigabit Ethernet adapter,
connected over USB 3.0.

commit 9dc8ba19c5 added support
for Realtek 8152/8153 driver.

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

include/configs/exynos5-common.h

@@ -170,6 +170,7 @@
 #define CONFIG_USB_HOST_ETHER
 #define CONFIG_USB_ETHER_ASIX
 #define CONFIG_USB_ETHER_SMSC95XX
+#define CONFIG_USB_ETHER_RTL8152
 
 /* USB boot mode */
 #define CONFIG_USB_BOOTING