phy: mvebu-sata: prepare new Dove DT Kconfig variable

DT-enabled Dove will move over from ARCH_DOVE in mach-dove to MACH_DOVE in
mach-mvebu. As non-DT ARCH_DOVE will stay to rot for a while, add a new
DT-only MACH_DOVE Kconfig.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index e677ee0..dc1756c 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -27,7 +27,7 @@
 
 config PHY_MVEBU_SATA
 	def_bool y
-	depends on ARCH_KIRKWOOD || ARCH_DOVE
+	depends on ARCH_KIRKWOOD || ARCH_DOVE || MACH_DOVE
 	depends on OF
 	select GENERIC_PHY