Convert CONFIG_VSC7385_ENET et al to Kconfig

This converts the following to Kconfig:
   CONFIG_VSC7385_ENET
   CONFIG_VSC9953

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/P1020RDB-PD_SPIFLASH_defconfig b/configs/P1020RDB-PD_SPIFLASH_defconfig
index 109f03b..a8bdb5a 100644
--- a/configs/P1020RDB-PD_SPIFLASH_defconfig
+++ b/configs/P1020RDB-PD_SPIFLASH_defconfig
@@ -125,6 +125,7 @@
 CONFIG_PHY_GIGE=y
 CONFIG_E1000=y
 CONFIG_MII=y
+CONFIG_VSC7385_ENET=y
 CONFIG_TSEC_ENET=y
 CONFIG_PCIE_FSL=y
 CONFIG_DM_RTC=y