touch: sec: add mutex to protect offload report

When the release_all_fingers and offload_report run at the same time,
it may cause the input report conflict before input sync.

bug: 190460965
Test: flash boot.img and vendor_boot.img.

Signed-off-by: davidycchen <davidycchen@google.com>
Change-Id: Ib3a1f8970f15dc28a73dece18b5307cb5deba220
1 file changed