disk: convert CONFIG_MAC_PARTITION to Kconfig

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
diff --git a/configs/PMC440_defconfig b/configs/PMC440_defconfig
index 3c8b2da..3aa54d7 100644
--- a/configs/PMC440_defconfig
+++ b/configs/PMC440_defconfig
@@ -18,6 +18,7 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_FAT=y
+CONFIG_MAC_PARTITION=y
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y