Revert "config: load firmware on config file"

This reverts commit 8db92dc6ea863f0956689369b2e95a7da357c157.

due to new kernel path

/kernel/fsl/imx

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: I17421b4529a8f003a2d18ffb302aa7bd89966b35