ks01lte: Fix Compensetion engine of temphumidity sensor.

libsensirion uses ro.product.name to determine which engine to start. So
set it ks01ltexx as it expects.
This also fixes mCompEngine is NULL logspam.

Change-Id: Ib9f88a7546aea5a9dbb5c2e657e4695f4186e47c