mount: needs find_mount_point.o

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/Kbuild b/libbb/Kbuild
index 130ad25..c099570 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -146,6 +146,7 @@
 lib-$(CONFIG_DF) += find_mount_point.o
 lib-$(CONFIG_MKFS_MINIX) += find_mount_point.o
 lib-$(CONFIG_FSCK_MINIX) += find_mount_point.o
+lib-$(CONFIG_MOUNT) += find_mount_point.o
 
 lib-$(CONFIG_HWCLOCK) += rtc.o
 lib-$(CONFIG_RTCWAKE) += rtc.o