toolchain: Simplify setup for shaderc, use https instead of git@
diff --git a/build-android/update_external_sources_android.sh b/build-android/update_external_sources_android.sh
index e728d89..4ceaeeb 100755
--- a/build-android/update_external_sources_android.sh
+++ b/build-android/update_external_sources_android.sh
@@ -66,7 +66,7 @@
    rm -rf $BASEDIR/shaderc
    echo "Creating local shaderc repository ($BASEDIR/shaderc)."
    cd $BASEDIR
-   git clone git@github.com:google/shaderc.git
+   git clone https://github.com/google/shaderc.git
    cd shaderc
    git checkout $SHADERC_REVISION
 }