[PATCH] misc: fs_loader: Fix compile warnings when CONFIG_CMD_UBIFS is enabled

["Pali Rohár" <pali@kernel.org>]

drivers/misc/fs_loader.c: In function ‘mount_ubifs’:
drivers/misc/fs_loader.c:46:12: warning: implicit declaration of function ‘ubi_part’ [-Wimplicit-function-declaration]
  int ret = ubi_part(mtdpart, NULL);
            ^~~~~~~~
drivers/misc/fs_loader.c:53:9: warning: implicit declaration of function ‘cmd_ubifs_mount’ [-Wimplicit-function-declaration]
  return cmd_ubifs_mount(ubivol);
         ^~~~~~~~~~~~~~~
drivers/misc/fs_loader.c: In function ‘umount_ubifs’:
drivers/misc/fs_loader.c:58:9: warning: implicit declaration of function ‘cmd_ubifs_umount’ [-Wimplicit-function-declaration]
  return cmd_ubifs_umount();
         ^~~~~~~~~~~~~~~~

Signed-off-by: Pali Rohár <pali@kernel.org>
---
 drivers/misc/fs_loader.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/misc/fs_loader.c b/drivers/misc/fs_loader.c
index 0139bd66ba76..5b4d03639c35 100644
--- a/drivers/misc/fs_loader.c
+++ b/drivers/misc/fs_loader.c
@@ -20,6 +20,10 @@
 #include <malloc.h>
 #include <spl.h>
 
+#ifdef CONFIG_CMD_UBIFS
+#include <ubi_uboot.h>
+#endif
+
 DECLARE_GLOBAL_DATA_PTR;
 
 /**
-- 
2.20.1