sepolicy: Add smd device contexts and rules

Add the contexts for smd devices as well as the rules for smd pkt and
tty loopback modules.

Change-Id: Ie2ac21a4a8e67bd066a80274b39e99361ad9f698
diff --git a/Android.mk b/Android.mk
index 9e7d096..110b563 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,6 +1,7 @@
 # Board specific SELinux policy variable definitions
 BOARD_SEPOLICY_DIRS := \
-       device/qcom/sepolicy
+       device/qcom/sepolicy \
+       device/qcom/sepolicy/test
 
 BOARD_SEPOLICY_UNION := \
        file_contexts \
@@ -12,4 +13,5 @@
        drmserver.te \
        adbd.te \
        qmuxd.te \
-       netmgrd.te
+       netmgrd.te \
+       smd_test.te