linux: update Radeon firmwares

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gettext: update to gettext-0.19.1

Signed-off-by: Stephan Raue <stephan@openelec.tv>
misc-firmware: update to misc-firmware-0.0.10

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