synaptics_dsx: Fix manual fw updates

Clear the update-related memory structures after the automated
update run from boot, so that manual updates don't trip on incompatible
data

Change-Id: Ie7e637b65f93af0fb2ffecc97e48f253a04056ca
input: touchscreen: Update TP firmware to 14001221

Change-Id: I75e1d932a5f3df7055420a07449fa1219d0036c5