linux: update to linux-3.9.7

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

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Python: add hack to break build if build goes wrong

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