[U-Boot] mx53loco build fails with CONFIG_VIDEO disabled

Hello,

mx53loco build fails when CONFIG_VIDEO and its friends disabled. I can send a patch fixing this.

I _really_ don't like ifdef -ing a lot of stuff. Instead I'd feel to have a separate file in the directory which does this LCD init and FB init call, and let the makefile handle the conditional compilation.

@Fabio: As you've pushed this stuff, I'd like to have your opinions on splitting this into a separate file.

Regards, Vikram