Export libLLVM include dirs

Test: mmma -j bionic/tools/versioner
Change-Id: If1c00ddb301bcad2649dfe3135956a2c324d63d3
diff --git a/Android.bp b/Android.bp
index 25d5bb8..3bdf212 100644
--- a/Android.bp
+++ b/Android.bp
@@ -186,6 +186,8 @@
         "libLLVMLibDriver",
     ],
 
+    export_include_dirs: ["include"],
+
     target: {
         host: {
             // Host build pulls in all ARM, Mips, X86 components.
@@ -198,6 +200,7 @@
                 llvm_aarch64_static_libraries +
                 llvm_mips_static_libraries +
                 llvm_x86_static_libraries,
+            export_include_dirs: ["host/include"],
         },
         windows: {
             enabled: true,
@@ -220,6 +223,9 @@
                 "-lpthread",
             ],
         },
+        android: {
+            export_include_dirs: ["device/include"],
+        },
         android_arm: {
             whole_static_libs: llvm_arm_static_libraries,
         },