bcm_sta: update to 6.30.223.248

update driver and revise patches needed for 3.17 kernel

bcm_sta: fix typo
Merge pull request #3566 from chewitt/bcmsta-update

bcm_sta: update to 6.30.223.248
Merge remote-tracking branch 'upstream/master'
update CONTRIBUTING.md
Merge pull request #3671 from stefansaraev/contributing

update CONTRIBUTING.md
libmad: build static

TODO: not used in core. move to unofficial?
Mesa: update to Mesa-10.3.5

Signed-off-by: Stephan Raue <stephan@openelec.tv>
kodi: update to kodi-14-8d4cdb5

Signed-off-by: Stephan Raue <stephan@openelec.tv>
misc-firmware: update to misc-firmware-0.0.13

Signed-off-by: Stephan Raue <stephan@openelec.tv>
wlan-firmware: update to wlan-firmware-0.0.26

Signed-off-by: Stephan Raue <stephan@openelec.tv>
dvb-firmware: update to dvb-firmware-0.0.47

Signed-off-by: Stephan Raue <stephan@openelec.tv>
linux: update to linux-3.17.5

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge remote-tracking branch 'upstream/master'
[aml] Update to Linux kernel 3.10.61
[WeTek.Play] Remove the fix_class_create_crash.patch, because it is already available in the latest kernel