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/ls2080a_simu_defconfig b/configs/ls2080a_simu_defconfig
index 5a72bd4..38cb1af 100644
--- a/configs/ls2080a_simu_defconfig
+++ b/configs/ls2080a_simu_defconfig
@@ -23,6 +23,7 @@
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_CACHE=y
 # CONFIG_CMD_MISC is not set
+# CONFIG_ISO_PARTITION is not set
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y