ata: Migrate CONFIG_MVSATA_IDE to Kconfig

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
diff --git a/configs/dreamplug_defconfig b/configs/dreamplug_defconfig
index 1130faa..9d24f9c 100644
--- a/configs/dreamplug_defconfig
+++ b/configs/dreamplug_defconfig
@@ -19,6 +19,7 @@
 CONFIG_CMD_FAT=y
 CONFIG_ISO_PARTITION=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_MVSATA_IDE=y
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_MACRONIX=y