configs: am43xx_evm: Enable SPL_ETH_SUPPORT

Enable CONFIG_SPL_ETH_SUPPORT to fix ethernet boot support.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

configs/am43xx_evm_defconfig

@@ -15,6 +15,7 @@ CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=1"
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 # CONFIG_MISC_INIT_R is not set
 CONFIG_VERSION_VARIABLE=y
+CONFIG_SPL_ETH_SUPPORT=y
 CONFIG_SPL_MTD_SUPPORT=y
 CONFIG_SPL_NET_SUPPORT=y
 CONFIG_SPL_NET_VCI_STRING="AM43xx U-Boot SPL"