Build cpio for the host too.

Needed by the Linux kernel build.

Bug: http://b/152339525
Test: toybox cpio --help
Change-Id: I830cdc477b1fc6cd69a2c0d6916dbac4d60071ea
(cherry picked from commit 5fd364093f8e43ab2cb4cec221721d61ef4c6ba4)
7 files changed