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/smartweb_defconfig b/configs/smartweb_defconfig
index db047f5..0f3cbdf 100644
--- a/configs/smartweb_defconfig
+++ b/configs/smartweb_defconfig
@@ -30,6 +30,7 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_FAT=y
+# CONFIG_DOS_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
 CONFIG_DFU_NAND=y