mtd: nand: fix GET/SET_FEATURES address on 16-bit devices

GET_FEATURES and SET_FEATURES also need byte-addressing on 16-bit devices.
Signed-off-by: NDavid Mosberger <davidm@egauge.net>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

include/linux/mtd/nand.h

@@ -925,7 +925,16 @@ static inline bool nand_is_slc(struct nand_chip *chip)
  */
 static inline int nand_opcode_8bits(unsigned int command)
 {
-	return command == NAND_CMD_READID || command == NAND_CMD_PARAM;
+	switch (command) {
+	case NAND_CMD_READID:
+	case NAND_CMD_PARAM:
+	case NAND_CMD_GET_FEATURES:
+	case NAND_CMD_SET_FEATURES:
+		return 1;
+	default:
+		break;
+	}
+	return 0;
 }
 
 /* return the supported JEDEC features. */