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/rock2_defconfig b/configs/rock2_defconfig
index cc51454..4368ac8 100644
--- a/configs/rock2_defconfig
+++ b/configs/rock2_defconfig
@@ -21,6 +21,7 @@
 CONFIG_CMD_TIME=y
 CONFIG_CMD_PMIC=y
 CONFIG_CMD_REGULATOR=y
+# CONFIG_SPL_DOS_PARTITION is not set
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent"
 CONFIG_NET_RANDOM_ETHADDR=y