Export SOONG_HOST_OUT as ANDROID_SOONG_HOST_OUT

Some host tools (launch_cvd, etc.) have been using HOST_OUT.
As their dependencies are now installed by soong, the tools should refer
to SOONG_HOST_OUT. Export it as ANDROID_SOONG_HOST_OUT.

Bug: 172065015
Test: build aosp_cf_x86_phone, execute launch_cvd
Change-Id: Ie175049f15b89485feec0d33d82e756b12a7ad8a
diff --git a/envsetup.sh b/envsetup.sh
index e4afdb9..a2d5d1d 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -307,6 +307,9 @@
     unset ANDROID_HOST_OUT
     export ANDROID_HOST_OUT=$(get_abs_build_var HOST_OUT)
 
+    unset ANDROID_SOONG_HOST_OUT
+    export ANDROID_SOONG_HOST_OUT=$(get_abs_build_var SOONG_HOST_OUT)
+
     unset ANDROID_HOST_OUT_TESTCASES
     export ANDROID_HOST_OUT_TESTCASES=$(get_abs_build_var HOST_OUT_TESTCASES)