net: dc2114x: Add Kconfig entries

Add Kconfig entries for the dc2114x driver and convert various boards.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Ramon Fried <rfried.dev@gmail.com>
diff --git a/configs/integratorap_cm946es_defconfig b/configs/integratorap_cm946es_defconfig
index ee9c69b..4032da9 100644
--- a/configs/integratorap_cm946es_defconfig
+++ b/configs/integratorap_cm946es_defconfig
@@ -25,6 +25,7 @@
 CONFIG_SYS_FLASH_PROTECTION=y
 CONFIG_SYS_FLASH_CFI=y
 CONFIG_EEPRO100=y
+CONFIG_TULIP=y
 CONFIG_PCI=y
 CONFIG_BAUDRATE=38400
 CONFIG_OF_LIBFDT=y