package/ffmpeg: bump version to 4.2.2

Changelog:
http://git.videolan.org/?p=ffmpeg.git;a=blob;f=Changelog;h=9c992b5c3e3995a0e8f3316b3087205196dc6403;hb=refs/heads/release/4.2

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 38510af3fb69f07ef15852607fc01b3709424081)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ffmpeg/ffmpeg.hash

@@ -1,5 +1,5 @@
 # Locally calculated
-sha256 cec7c87e9b60d174509e263ac4011b522385fd0775292e1670ecc1180c9bb6d4  ffmpeg-4.2.1.tar.xz
+sha256 cb754255ab0ee2ea5f66f8850e1bd6ad5cac1cd855d0a2f4990fb8c668b0d29c  ffmpeg-4.2.2.tar.xz
 sha256 8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING.GPLv2
 sha256 b634ab5640e258563c536e658cad87080553df6f34f62269a21d554844e58bfe  COPYING.LGPLv2.1
 sha256 cad1218c22121b169fb1380178ab7a0b33cb38a3ff6d3915b8533d1d954f3ce7  LICENSE.md

package/ffmpeg/ffmpeg.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FFMPEG_VERSION = 4.2.1
+FFMPEG_VERSION = 4.2.2
 FFMPEG_SOURCE = ffmpeg-$(FFMPEG_VERSION).tar.xz
 FFMPEG_SITE = http://ffmpeg.org/releases
 FFMPEG_INSTALL_STAGING = YES