FAT: initialize all fields in cur_part_info, simplify init

cur_part_info.{name,type} are strings. So, we don't need to memset()
the entire thing, just put the NULL-termination in the first byte.

Add missing initialization of the bootable and uuid fields.

None of these fields are actually used by fat.c. However, since it
stores the entire disk_partition_t, we should make sure that all fields
are valid.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
diff --git a/fs/fat/fat.c b/fs/fat/fat.c
index 731d369..31042e5 100644
--- a/fs/fat/fat.c
+++ b/fs/fat/fat.c
@@ -92,8 +92,12 @@
 		cur_part_info.start = 0;
 		cur_part_info.size = dev_desc->lba;
 		cur_part_info.blksz = dev_desc->blksz;
-		memset(cur_part_info.name, 0, sizeof(cur_part_info.name));
-		memset(cur_part_info.type, 0, sizeof(cur_part_info.type));
+		cur_part_info.name[0] = 0;
+		cur_part_info.type[0] = 0;
+		cur_part_info.bootable = 0;
+#ifdef CONFIG_PARTITION_UUIDS
+		cur_part_info.uuid[0] = 0;
+#endif
 	}
 
 	/* Make sure it has a valid FAT header */