disk: convert CONFIG_MAC_PARTITION to Kconfig

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
diff --git a/disk/part.c b/disk/part.c
index 4e37735..cb9b861 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -234,7 +234,7 @@
 
 static void print_part_header(const char *type, struct blk_desc *dev_desc)
 {
-#if defined(CONFIG_MAC_PARTITION) || \
+#if CONFIG_IS_ENABLED(MAC_PARTITION) || \
 	defined(CONFIG_DOS_PARTITION) || \
 	defined(CONFIG_ISO_PARTITION) || \
 	defined(CONFIG_AMIGA_PARTITION) || \