projects/RPi: update RPi support patch for linux-3.15, switch to kernel 3.15, (temp) remove ALSA driver from kernel because of stability issues (TODO)

Signed-off-by: Stephan Raue <stephan@openelec.tv>
connman: update to connman-1.24

Signed-off-by: Stephan Raue <stephan@openelec.tv>
linux: remove kernel 3.14 patches and support

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libva-driver-intel: rename to package 'libva-intel-driver', change source url

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libva-intel-driver: update to libva-intel-driver-1.3.2.pre1

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xf86-video-intel: update to xf86-video-intel-2.99.912

Signed-off-by: Stephan Raue <stephan@openelec.tv>