[PATCH] f2fs: Fix build error while CONFIG_NLS=m

[YueHaibing]

If CONFIG_F2FS_FS=y but CONFIG_NLS=m, building fails:

fs/f2fs/file.o: In function `f2fs_ioctl':
file.c:(.text+0xb86f): undefined reference to `utf16s_to_utf8s'
file.c:(.text+0xe651): undefined reference to `utf8s_to_utf16s'

Select CONFIG_NLS to fix this.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Fixes: 61a3da4d5ef8 ("f2fs: support FS_IOC_{GET,SET}FSLABEL")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 fs/f2fs/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig
index 110a38c..95f1b99 100644
--- a/fs/f2fs/Kconfig
+++ b/fs/f2fs/Kconfig
@@ -2,6 +2,7 @@
 config F2FS_FS
 	tristate "F2FS filesystem support"
 	depends on BLOCK
+	select NLS
 	select CRYPTO
 	select CRYPTO_CRC32
 	select F2FS_FS_XATTR if FS_ENCRYPTION
-- 
2.7.4