sepolicy: secure_touch: enable secure touch for qseecomd

secure_touch sysfs need read/write access from secure UI listener
which runs inside qseecom daemon. Add selinux policies to support
scenario when secure touch state is updated from the listener.

CRs-Fixed: 989495
Change-Id: Iabebff204aa57504bdd39a18f67c4065b8b4678d