package/ffmpeg: bump version to 2.8.1

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

package/ffmpeg/ffmpeg.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256 993ca7216aa0eac899a85fe1119dac12ef0655d67f932de6a32acc00188f8182  ffmpeg-2.8.tar.xz
+sha256	5790162028a868234f4f60b030f5f51bd70785de8a27878e271df029cdf4cb9a	ffmpeg-2.8.1.tar.xz

package/ffmpeg/ffmpeg.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FFMPEG_VERSION = 2.8
+FFMPEG_VERSION = 2.8.1
 FFMPEG_SOURCE = ffmpeg-$(FFMPEG_VERSION).tar.xz
 FFMPEG_SITE = http://ffmpeg.org/releases
 FFMPEG_INSTALL_STAGING = YES