atvclient: update sources to address #3190
Cuboxi: remove old boot file
Cuboxi: remove project specific update.sh
u-boot: added create_sdcard script for u-boot booted devices.

Includes work from @soul9 and Wandboard
u-boot: added files to support new u-boot
u-boot: added update.sh script
u-boot: cleanup old files and added u-boot specific update.sh script
mkimage: added support for u-boot
projects/Cuboxi/patches/linux: add kernel upstream patches

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/Cuboxi/patches/xbmc-master: update Cubox support patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge pull request #3209 from jenkins101/cuboxi-boot

u-boot: bootwork
Merge pull request #3212 from jenkins101/mkimage2

mkimage: added support for u-boot
Merge pull request #3193 from chewitt/atvclient-update

atvclient: update sources to address #3190
xbmc-pvr-addons: update to xbmc-pvr-addons-91cc731
vdr-iptv: update to vdr-iptv-2.1.3
vdr-satip: update to vdr-satip-0.3.2
vdr-plugin-dvbapi: update to vdr-plugin-dvbapi-1203c18