Revert "Remove vendor access to wpa_socket"

This reverts commit 3ef4216053407b8b0d9ff26f622efc2224cbf4c4.

rpius@ says that this can cause some devices to fail to boot.
Reverting and will re-test/resubmit tomorrow.

Change-Id: I48f033516b93d10edc77a277de49a3e21a068930
diff --git a/sepolicy/vendor/hal_wifi_supplicant_default.te b/sepolicy/vendor/hal_wifi_supplicant_default.te
index cab782a..4f13574 100644
--- a/sepolicy/vendor/hal_wifi_supplicant_default.te
+++ b/sepolicy/vendor/hal_wifi_supplicant_default.te
@@ -4,3 +4,7 @@
 
 allow hal_wifi_supplicant_default wifi_data_file:dir create_dir_perms;
 allow hal_wifi_supplicant_default wifi_data_file:file create_file_perms;
+
+# Create a socket for receiving info from wpa
+allow hal_wifi_supplicant_default wpa_socket:dir create_dir_perms;
+allow hal_wifi_supplicant_default wpa_socket:sock_file create_file_perms;