atmel: Fix multitouch issue

Original commit https://github.com/hounjini/htc-rider-cm-kernel/commit/a4c944bb46ac1fac9c1f3e25598f85ceeb3bd704
Credits to agrabren and hounjini

Change-Id: Ib463886f8511b708576a8095a2914ab5b04e8fe4
1 file changed