[OE-core] [meta-xilinx] u-boot-xilinx: Rename folder and patch name as well to u-boot

[Richard Purdie]

On Fri, 2011-12-16 at 19:13 +0100, Stefan Schmidt wrote:
> For consistency and perhaps trademark reasons rename all u-boot references from
> uboot to u-boot.
> 
> Signed-off-by: Stefan Schmidt <stefan at datenfreihafen.org>

Merged, thanks.

Richard