input: tsc2007: Add features to the TSC2007 driver

The following features are now supported -

1. Inverse coordinates
2. Suspend / resume
3. Interrupt flags from platform data

Change-Id: I08adcdf0fd1c983ffaa958bea23e2ed06aa6e086
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>