Add darwin host headers

Change-Id: Ibe1504f23208ca8522b13b9df11b6c0803859e1b
diff --git a/default.xml b/default.xml
index 2856862..17763f4 100644
--- a/default.xml
+++ b/default.xml
@@ -326,6 +326,7 @@
   <project path="prebuilts/gcc/darwin-x86/arm/arm-eabi-4.7" name="platform/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.7" groups="darwin,arm" />
   <project path="prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.6" name="platform/prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.6" groups="darwin,arm" />
   <project path="prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.7" name="platform/prebuilts/gcc/darwin-x86/arm/arm-linux-androideabi-4.7" groups="darwin,arm" />
+  <project path="prebuilts/gcc/darwin-x86/host/headers" name="platform/prebuilts/gcc/darwin-x86/host/headers" groups="darwin" />
   <project path="prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" name="platform/prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1" groups="darwin" />
   <project path="prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.6" name="platform/prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.6" groups="darwin,mips" />
   <project path="prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7" name="platform/prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7" groups="darwin,mips" />