bsp: valleyisland: enable R8169 ethernet

This patch enable R8169 ethernet support for valleyisland for both 32-bit and 64-bit system.

Signed-off-by: Chai, Chong Yi <chong.yi.chai@intel.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

bsp/valleyisland/valleyisland.cfg

@@ -69,3 +69,6 @@ CONFIG_RTC_INTF_SYSFS=y
 CONFIG_RTC_INTF_PROC=y
 CONFIG_RTC_INTF_DEV=y
 CONFIG_RTC_DRV_CMOS=y
+
+# Ethernet support
+CONFIG_R8169=m