Revert "ruby:remove firmware"

This reverts commit 213379c68a48fea2d24eaad7053731a8956bb71b.
Revert "ruby: fix conflicts from cherry-pick"

This reverts commit c0bd5ad9d1493472daf9c30e66206ccbab4d9801.
Revert "ruby: move TI WLAN firmware to vendor"

This reverts commit 5b628f11676092257467b05f687b86ab9335b069.
Revert "ruby: use source built uim-sysfs, move TIInit.bts to vendor"

This reverts commit 769551a8a5da5d7611ed1eb65ff24f5370d1eb68.