barbet: support touch sensitivity mode switching

Use persist and debug system property to control the touch driver
attribute file glove_mode.

0: default sensitivity mode (default)
1: high sensitivity mode

Bug: 161774131
Test: manual test
Signed-off-by: Tai Kuo <taikuo@google.com>
Change-Id: I6ca595208d3fb2f5be63b6dcd5630421ebd657eb
1 file changed