disk: convert CONFIG_ISO_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/mk802_a10s_defconfig b/configs/mk802_a10s_defconfig
index def90dd..4c49dda 100644
--- a/configs/mk802_a10s_defconfig
+++ b/configs/mk802_a10s_defconfig
@@ -12,5 +12,6 @@
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
 # CONFIG_SPL_DOS_PARTITION is not set
+# CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_AXP152_POWER=y
 CONFIG_USB_EHCI_HCD=y