[Buildroot] [git commit master 1/1] u-boot: remove arch specific patches infrastructure

[Thomas Petazzoni]

commit: http://git.buildroot.net/buildroot/commit/?id=1cee7b34b479d29ad090e2fc76d58aa5cc6e93a2
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/master

A very complicated infrastructure for just a special case, for an
ancient version of U-Boot. Recent versions of U-Boot are reported to
work just fine on Atmel ARM evaluation boards.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>

Patch is too large, so refusing to show it