ARM: DaVinci: dm646x defconfig modifications

Modifies the davinci_evm_dm646x_defconfig to add the emac support.
Signed-off-by: Chaithrika U.S <chaithrika@ti.com>

arch/arm/configs/davinci_evm_dm646x_defconfig

@@ -496,7 +496,7 @@ CONFIG_NET_ETHERNET=y
 # CONFIG_MII is not set
 # CONFIG_AX88796 is not set
 # CONFIG_SMC91X is not set
-# CONFIG_TI_DAVINCI_EMAC is not set
+CONFIG_TI_DAVINCI_EMAC=y
 # CONFIG_DM9000 is not set
 # CONFIG_IBM_NEW_EMAC_ZMII is not set
 # CONFIG_IBM_NEW_EMAC_RGMII is not set
@@ -640,6 +640,7 @@ CONFIG_I2C_DAVINCI=y
 # Miscellaneous I2C Chip support
 #
 # CONFIG_DS1682 is not set
+CONFIG_AT24=y
 # CONFIG_SENSORS_EEPROM is not set
 # CONFIG_SENSORS_PCF8574 is not set
 # CONFIG_PCF8575 is not set