disk: convert CONFIG_DOS_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/etamin_defconfig b/configs/etamin_defconfig
index 2f5bd3c..71b3511 100644
--- a/configs/etamin_defconfig
+++ b/configs/etamin_defconfig
@@ -44,6 +44,7 @@
 CONFIG_CMD_TIME=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_UBI=y
+# CONFIG_DOS_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_DFU_NAND=y