[Thread] add missing ioctl permission for ot_rcp
Otherwise, it throws permission denied error:
```
avc: denied { ioctl } for path="/dev/pts/0" dev="devpts" ino=3 ioctlcmd=0x5401 scontext=u:r:ot_rcp:s0 tcontext=u:object_r:devpts:s0 tclass=chr_file permissive=0
```
Test: locally tested that this can fix the denied issue
Bug: 296969044
Change-Id: Ica28214693794b969138212ddb3d19f0dcc34bcf
diff --git a/vendor/ot_rcp.te b/vendor/ot_rcp.te
index 0da517a..b1f57a7 100644
--- a/vendor/ot_rcp.te
+++ b/vendor/ot_rcp.te
@@ -10,7 +10,7 @@
allow hal_threadnetwork_default devpts:chr_file {open read write ioctl};
allow ot_rcp hal_threadnetwork_default:fd use;
allow ot_rcp hal_threadnetwork_default:fifo_file rw_file_perms;
-allow ot_rcp devpts:chr_file {read write};
+allow ot_rcp devpts:chr_file {read write ioctl};
allow ot_rcp self:udp_socket create_socket_perms_no_ioctl;
allow ot_rcp node:udp_socket node_bind;
allow ot_rcp port:udp_socket name_bind;