Include 26.0 compat file on system image.

This file is necessary for using an mr1 system image in conjunction
with an oc-dev vendor image.  This is currently needed by GSI testing,
for example.

(cherry-pick of commit: 03596f28)

Bug: 66358348
Test: File is included on system image.
Change-Id: Ie694061d08acf17453feb596480e42974f8c714c

Android.mk

@@ -197,6 +197,7 @@ ifeq ($(PRODUCT_FULL_TREBLE),true)
 # Use split SELinux policy
 LOCAL_REQUIRED_MODULES += \
     $(platform_mapping_file) \
+    26.0.cil \
     nonplat_sepolicy.cil \
     plat_sepolicy.cil \
     plat_and_mapping_sepolicy.cil.sha256 \
@@ -412,6 +413,16 @@ current_mapping.cil :=
 #################################
 include $(CLEAR_VARS)
 
+LOCAL_MODULE := 26.0.cil
+LOCAL_SRC_FILES := private/compat/26.0/26.0.cil
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/selinux/mapping
+
+include $(BUILD_PREBUILT)
+#################################
+include $(CLEAR_VARS)
+
 LOCAL_MODULE := plat_and_mapping_sepolicy.cil.sha256
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_TAGS := optional