recipes-bsp:u-boot-xlnx: Delete 2012.10 u-boot recipe.

Removing the 2012.10 u-boot recipe because it is not a version in
poky recipes.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-bsp:u-boot-xlnx: Move patch files out of include file.

Include file is common and should not hold patch files which may no longer
be required in future versions of u-boot. So move the patches currently
required by 2013.01 into the 2013.101 bb file. If for some reasons these
patches are also required in later versions, they should be added to
the new version recipe also.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-bsp:u-boot: Add u-boot-xlnx_2013.07 and bleeding edge recipe.

Add u-boot-xlnx_2013.07.bb and point to latest master next on u-boot-xlnx.git
Also add u-boot-xlnx_git.bb as a bleeding edge recipe for u-boot.
The bleeding edge version defaults to master-next latest commit, but can
be changed to build any branch in the u-boot-xlnx.git repository.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
recipes-kernel:linux-xlnx Add recipe for linux-xlnx 3.10 and corresponding
config file in conf/machine.

Added linux-xlnx_3.10.bb recipe, pointing initially at master next branch.

Signed-off-by: Sipke Vriend <sipke.vriend@xilinx.com>
external-xilinx-toolchain: Created recipe

* Allows use of external Xilinx MicroBlaze and Zynq pre-built toolchains
* Does not require additional layer dependencies
* Updated documentation regarding external toolchain

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>