sm8350-common: sepolicy: Allow platform app to find SoterService

* Fix selinux denied of WeChat fingerprint payment

- E SELinux : avc:  denied  { find } for interface=vendor.qti.hardware.soter::ISoter sid=u:r:platform_app:s0:c512,c768 pid=3613 scontext=u:r:platform_app:s0:c512,c768 tcontext=u:object_r:vendor_hal_soter_hwservice:s0 tclass=hwservice_manager permissive=0

Issue: https://gitlab.com/LineageOS/issues/android/-/issues/4701

Change-Id: I3176f8e709fb31aec16a31094b78f753d1d16b43

sepolicy/vendor/platform_app.te

+allow platform_app vendor_hal_soter_hwservice:hwservice_manager find;
+binder_call(platform_app, vendor_hal_soter_qti)