eeprom: at24: fix a line break

Align the broken line with the opening parenthesis to stay consistent
with the rest of the driver code.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Tested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>