i2ctransfer: fix build warning

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

miscutils/i2c_tools.c

@@ -107,6 +107,7 @@ static ALWAYS_INLINE void *itoptr(int i)
 	return (void*)(intptr_t)i;
 }
 
+#if ENABLE_I2CGET || ENABLE_I2CSET || ENABLE_I2CDUMP || ENABLE_I2CDETECT
 static int32_t i2c_smbus_access(int fd, char read_write, uint8_t cmd,
 				int size, union i2c_smbus_data *data)
 {
@@ -120,7 +121,6 @@ static int32_t i2c_smbus_access(int fd, char read_write, uint8_t cmd,
 	return ioctl(fd, I2C_SMBUS, &args);
 }
 
-#if ENABLE_I2CGET || ENABLE_I2CSET || ENABLE_I2CDUMP || ENABLE_I2CDETECT
 static int32_t i2c_smbus_read_byte(int fd)
 {
 	union i2c_smbus_data data;