[Buildroot] [git commit master 1/1] board: update and minify at91sam9263ek_defconfig

[Peter Korsgaard]

commit: http://git.buildroot.net/buildroot/commit/?id=8b7f61bc273b9e2f8d29a1b4ac93555acfca420f
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/master

Use modern kernel and U-Boot versions, and get rid of the now useless
kernel configuration file since we use the kernel defconfig file
instead.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet at sunsite.dk>

Patch is too large, so refusing to show it