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/dbau1100_defconfig b/configs/dbau1100_defconfig
index 2b3ccd8..67b36e8 100644
--- a/configs/dbau1100_defconfig
+++ b/configs/dbau1100_defconfig
@@ -12,3 +12,4 @@
 # CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
+CONFIG_MAC_PARTITION=y