arm/dt: msm8974-liquid: Correct edge sensitivity issues

Top and bottom of touchscreen sensitivity is lacking, so
improve the range that touch responds in.

CRs-fixed: 467971
Change-Id: Ieebfb6bd6d8bd3d4713bb5bf23793fa6c4a71479
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>