am3517_evm: activate Ethernet PHY

Pin 30 is connected to PHY's RESET# signal, so it must be
put to high. Otherwise PHY won't be found via MDIO interface.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>

include/configs/am3517_evm.h

@@ -57,6 +57,11 @@
  * Hardware drivers
  */
 
+/*
+ * OMAP GPIO configuration
+ */
+#define CONFIG_OMAP_GPIO
+
 /*
  * NS16550 Configuration
  */