input: touchscreen: Clean initialising linux kernel code

Use designated initializer code in gt9xx_update.c and
goodix_tool.c Goodix drivers.

CRs-fixed: 554746
Change-Id: Idc5b45c09813486c926ce52b2d41e81df526219b
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>