Resolve the external toolchain library dependency.

Change-Id: I80c531e85b1587240c9acd3964a7306d4abb4154
diff --git a/mipsel-linux-uclibc/sys-root/usr/mipsel-linux/lib b/mipsel-linux-uclibc/sys-root/usr/mipsel-linux/lib
new file mode 120000
index 0000000..a5bc743
--- /dev/null
+++ b/mipsel-linux-uclibc/sys-root/usr/mipsel-linux/lib
@@ -0,0 +1 @@
+../../../lib
\ No newline at end of file