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_emu_defconfig b/configs/ls2080a_emu_defconfig
index e47f4e4..3b56ec0 100644
--- a/configs/ls2080a_emu_defconfig
+++ b/configs/ls2080a_emu_defconfig
@@ -24,6 +24,7 @@
 CONFIG_CMD_CACHE=y
 # CONFIG_CMD_MISC is not set
 # CONFIG_DOS_PARTITION is not set
+# CONFIG_ISO_PARTITION is not set
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y