Revert "s2w: Sweep 2 Wake"

This reverts commit 1be388f6a5a65ad3611ba96e2a2b0a3f19aae5bb.
Add & Enable exFAT driver

It seems to work correctly and automatically on AOSP 4.3 ROMs.  AOSP
doesn't load the exFAT modules automatically, and I'm lazy, so build the
driver into the kernel.

Add exFAT 1.2.4 driver from Samsung OSRC
Touchscreen optimizations

- Increase TS bandwidth
- Merge i2c transactions
- Clean up i2c-qup.c