staging: iio: fix some formatting issues

fixing:
CHECK: Alignment should match open parenthesis
#1351: FILE: drivers/staging/iio/addac/adt7316.c:1351:

CHECK: Alignment should match open parenthesis
#1378: FILE: drivers/staging/iio/addac/adt7316.c:1378:

Signed-off-by: Wang Qing <wangqing@vivo.com>
Link: https://lore.kernel.org/r/1621389170-5850-1-git-send-email-wangqing@vivo.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>