pixel-sepolicy: allow pixelstats to write f2fs sysfs

avc: denied { write } for name="compr_saved_block" dev="sysfs" ino=78358 scontext=u:r:pixelstats_vendor:s0 tcontext=u:object_r:sysfs_fs_f2fs:s0 tclass=file permissive=0

bug: 173399386
Change-Id: Ic8f67ddc02f7a8f0490458626faa84eb4b794311
diff --git a/pixelstats/pixelstats_vendor.te b/pixelstats/pixelstats_vendor.te
index ec147de..3fc0d36 100644
--- a/pixelstats/pixelstats_vendor.te
+++ b/pixelstats/pixelstats_vendor.te
@@ -1,7 +1,7 @@
 allow pixelstats_vendor sysfs_scsi_devices_0000:dir search;
 allow pixelstats_vendor sysfs_scsi_devices_0000:file r_file_perms;
 allow pixelstats_vendor sysfs_fs_f2fs:dir search;
-allow pixelstats_vendor sysfs_fs_f2fs:file r_file_perms;
+allow pixelstats_vendor sysfs_fs_f2fs:file rw_file_perms;
 get_prop(pixelstats_vendor, boottime_public_prop)
 
 allow pixelstats_vendor fwk_stats_service:service_manager find;