Add linux_musl prebuilts

These will be used for USE_HOST_MUSL=true builds

Test: m USE_HOST_MUSL=true
Bug: 179809553
Change-Id: I42317345d95b0a950cc44905c41f7b5550bf5cb9
diff --git a/update-prebuilts.sh b/update-prebuilts.sh
index d414a3f..4f18566 100755
--- a/update-prebuilts.sh
+++ b/update-prebuilts.sh
@@ -45,6 +45,7 @@
 fetch_artifact linux build-common-prebuilts.zip "${tmpdir}/common.zip"
 fetch_artifact linux manifest_${BUILD_NUMBER}.xml "${tmpdir}/manifest.xml"
 fetch_artifact darwin_mac build-prebuilts.zip "${tmpdir}/darwin.zip"
+fetch_artifact linux_musl build-prebuilts.zip "${tmpdir}/linux_musl.zip"
 fetch_artifact linux_musl musl-sysroot32.zip "${tmpdir}/musl-sysroot32.zip"
 fetch_artifact linux_musl musl-sysroot64.zip "${tmpdir}/musl-sysroot64.zip"
 
@@ -57,12 +58,13 @@
 unzip_to linux-x86 "${tmpdir}/linux.zip"
 unzip_to common "${tmpdir}/common.zip"
 unzip_to darwin-x86 "${tmpdir}/darwin.zip"
+unzip_to linux_musl-x86 "${tmpdir}/linux_musl.zip"
 unzip_to sysroots/x86_64-linux-musl "${tmpdir}/musl-sysroot64.zip"
 unzip_to sysroots/i686-linux-musl "${tmpdir}/musl-sysroot32.zip"
 
 cp -f "${tmpdir}/manifest.xml" manifest.xml
 
-git add manifest.xml linux-x86 darwin-x86 common sysroots/x86_64-linux-musl sysroots/i686-linux-musl
+git add manifest.xml linux-x86 linux_musl-x86 darwin-x86 common sysroots/x86_64-linux-musl sysroots/i686-linux-musl
 git commit -m "Update build-tools to ab/${BUILD_NUMBER}
 
 https://ci.android.com/builds/branches/aosp-build-tools-release/grid?head=${BUILD_NUMBER}&tail=${BUILD_NUMBER}