Ignore HardcodedColor lint for touchpad icon.

This is the same color resource used by all of the other icon, some of
which are ignored by this file as well. Also ignore pointer fill color
hardcode, as there is no theme equivalent available.

Bug: 269100659
Test: Manual, run repo hooks.
Flag: EXEMPT fixing lint check
Change-Id: Ib99803609525698c5c0049fea79814bff24c9c5f