kernel spec changes for custom mm builds

[Nicolas Mailhot]

Hi,

Are the following changes totally insane, or could they be considered
for merging?

(partially build-tested, got to the point the -mm build didn't like me,
I need to tweak my config file)

Regards,

-- 
Nicolas Mailhot

[Nicolas Mailhot]

Built, installed and booted a kernel using the patch now. So there is at
least one system on which it works;)

-- 
Nicolas Mailhot