STPK-1429 Don't add trailing zero to sysfs write buffer
STPK-1429 Don't add trailing zero to sysfs write buffer

The final NUL is not required, so don't write one.

Issue: STPK-1429

Change-Id: I8df959f7f205c818211e938da36a46581bb6e7d9
Signed-off-by: Patrick Porlan <6b7a5b9114e07d350ffba0c179039885a7e82794@intel.com>

01org/android-iio-sensors-hal,01org/android-iio-sensors-hal