package/rpi-firmware: Bump version to kernel 3.12.25

This version bump, amongst other things, introduces
OMX_ImageFilterDeInterlaceFast, which is needed by
the upcoming xbmc/kodi version bump.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/rpi-firmware/rpi-firmware.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-RPI_FIRMWARE_VERSION = f15c3b5e4018b974de30d95d3173b1e936f66bd7
+RPI_FIRMWARE_VERSION = 16ebc76904699b036f709beb65ee5ff70f83190b
 RPI_FIRMWARE_SITE = $(call github,raspberrypi,firmware,$(RPI_FIRMWARE_VERSION))
 RPI_FIRMWARE_LICENSE = BSD-3c
 RPI_FIRMWARE_LICENSE_FILES = boot/LICENCE.broadcom