debugpolicy: allow read access to the DPM version file

Allow init_dpm.sh to read the DPM version file at
sys/firmware/devicetree/base/dpm/version

Bug: 234479585

Change-Id: I3c1d11db1635ff7975aaab70c692a32881b3e483
Signed-off-by: Bryan Bong Gyoune Kim <bgkim@google.com>
diff --git a/debugpolicy/init_dpm.te b/debugpolicy/init_dpm.te
index b91c561..3a4f936 100644
--- a/debugpolicy/init_dpm.te
+++ b/debugpolicy/init_dpm.te
@@ -5,7 +5,7 @@
 
 userdebug_or_eng(`
 allow init_dpm vendor_toolbox_exec:file execute_no_trans;
-allow init_dpm sysfs_dpm_variant:file r_file_perms;
+allow init_dpm sysfs_dpm:file r_file_perms;
 allow init_dpm block_device:dir search;
 allow init_dpm dpm_block_device:blk_file rw_file_perms;
 ')