ar71xx: fix typo in rb91x nand source

Fixes: 3b1ea0996f83 ("ar71xx: fix build error due to bad include")

Signed-off-by: Koen Vandeputte <[email protected]>

target/linux/ar71xx/files/drivers/mtd/nand/rb91x_nand.c

@@ -16,7 +16,8 @@
 #include <linux/mtd/nand.h>
 #else
 #include <linux/mtd/rawnand.h>
-#endif#include <linux/mtd/mtd.h>
+#endif
+#include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>