[yocto] Adding kernel module to minimal image

[Jack]

Hello,

How can I add kernel module to fsl-image-minimal?
I want to add hello-mod module in
/yocto/meta-skeleton/recipes-kerne/hello-mod path 
to my fsl-image-minimal.
Then I read the Kernel Development Manual document and add
MACHINE_EXTRA_RRECOMMENDS += "kernel-module-hello-mod" 
to local.conf file.
After building the image, hello-mod dosen't exist in fsl-image-minimal in
/yocto/build_p1022ds_release/tmp/work
/p1022ds-fsl-linux-gnuspe/fsl-image-minimal-1.0-r0
path.
 
What can I do to add hello-mod module to my fsl-image-minimal?