Label /dev/rtc0 as rtc_device.

Grant access to system_server, as it is used by AlarmManagerService.

Change-Id: I4f099fe30ba206db07d636dd454d43d3df9d3015
diff --git a/device.te b/device.te
index c155fcc..b2f4f1d 100644
--- a/device.te
+++ b/device.te
@@ -12,6 +12,7 @@
 type pmsg_device, dev_type, mlstrustedobject;
 type radio_device, dev_type;
 type ram_device, dev_type;
+type rtc_device, dev_type;
 type vold_device, dev_type;
 type console_device, dev_type;
 type cpuctl_device, dev_type;
diff --git a/file_contexts b/file_contexts
index 75c718a..689cc48 100644
--- a/file_contexts
+++ b/file_contexts
@@ -77,6 +77,7 @@
 /dev/random		u:object_r:random_device:s0
 /dev/rpmsg-omx[0-9]	u:object_r:rpmsg_device:s0
 /dev/rproc_user	u:object_r:rpmsg_device:s0
+/dev/rtc0           u:object_r:rtc_device:s0
 /dev/snd(/.*)?		u:object_r:audio_device:s0
 /dev/socket(/.*)?	u:object_r:socket_device:s0
 /dev/socket/adbd	u:object_r:adbd_socket:s0
diff --git a/system_server.te b/system_server.te
index 42c3b62..a2093ff 100644
--- a/system_server.te
+++ b/system_server.te
@@ -163,6 +163,7 @@
 allow system_server adbd_socket:sock_file rw_file_perms;
 allow system_server audio_device:dir r_dir_perms;
 allow system_server audio_device:chr_file r_file_perms;
+allow system_server rtc_device:chr_file rw_file_perms;
 
 # tun device used for 3rd party vpn apps
 allow system_server tun_device:chr_file rw_file_perms;