This patch fixes [currently missing] Jenkins build verification.
Currently it's just skipping the firmware due to errors:
make -C target/firmware CROSS_COMPILE=arm-none-eabi-
make[1]: Entering directory '/build/src/target/firmware'
/usr/bin/env: 'python': No such file or directory
/usr/bin/env: 'python': No such file or directory
/usr/bin/env: 'python': No such file or directory
/usr/bin/env: 'python': No such file or directory
/usr/bin/env: 'python': No such file or directory
/usr/bin/env: 'python': No such file or directory
...
Change-Id: Ibfcc17ca2736da82d60db3b0e350b74e788031b0