Split mac_permissions.xml to /system and /vendor

Test: Build and boot Marlin
Test: See the following in the logs:
01-01 02:10:28.756  1345  1345 D SELinuxMMAC: Using policy file /system/etc/selinux/plat_mac_permissions.xml
01-01 02:10:28.787  1345  1345 D SELinuxMMAC: Using policy file /vendor/etc/selinux/nonplat_mac_permissions.xml
Bug: 36003167

Change-Id: If17490a2a5d94bfea1fa6d282282d45d67e207e9

Android.mk

@@ -953,7 +953,7 @@ include $(CLEAR_VARS)
 LOCAL_MODULE := plat_mac_permissions.xml
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_TAGS := optional
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/security
+LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/selinux
 
 include $(BUILD_SYSTEM)/base_rules.mk
 
@@ -987,7 +987,7 @@ include $(CLEAR_VARS)
 LOCAL_MODULE := nonplat_mac_permissions.xml
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_TAGS := optional
-LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/security
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR)/etc/selinux
 
 include $(BUILD_SYSTEM)/base_rules.mk