ata: Migrate CONFIG_MVSATA_IDE to Kconfig

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 43e6626..990de72 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -72,6 +72,12 @@
 	  Enable this driver to support the SATA controller found in
 	  some Freescale PowerPC SoCs.
 
+config MVSATA_IDE
+	bool "Enable Marvell SATA controller driver support via IDE interface"
+	help
+	  Enable this driver to support the SATA controller found in
+	  some Marvell SoCs, running in IDE compatibility mode using PIO.
+
 config SATA_MV
 	bool "Enable Marvell SATA controller driver support"
 	select LIBATA