Specify model name

The api for the palm rejection model has changed, and now requires a
name to be specified. Send empty string to use the default model.

Bug: 198472780
Test: verified on a tablet device
Merged-In: Ida4c3a8398a838c7feb2ebd13e8c9994bea5062c
Change-Id: Ida4c3a8398a838c7feb2ebd13e8c9994bea5062c
1 file changed