buildroot

package/rpi-firmware: bump for misc enhancements and fixes

Fixes for h264 video deocding, audio playback and cec.
Some improvements in HDMI output management.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>