flac: add channel layout masks for streams with 7 or 8 channels.

They were added to the latest FLAC specification:
https://git.xiph.org/?p=flac-website.git;a=commit;h=65c199a2Signed-off-by: Anton Khirnov <anton@khirnov.net>

libavcodec/flac.c

@@ -29,13 +29,15 @@
 
 static const int8_t sample_size_table[] = { 0, 8, 12, 0, 16, 20, 24, 0 };
 
-static const int64_t flac_channel_layouts[6] = {
+static const uint64_t flac_channel_layouts[8] = {
     AV_CH_LAYOUT_MONO,
     AV_CH_LAYOUT_STEREO,
     AV_CH_LAYOUT_SURROUND,
     AV_CH_LAYOUT_QUAD,
     AV_CH_LAYOUT_5POINT0,
-    AV_CH_LAYOUT_5POINT1
+    AV_CH_LAYOUT_5POINT1,
+    AV_CH_LAYOUT_6POINT1,
+    AV_CH_LAYOUT_7POINT1
 };
 
 static int64_t get_utf8(GetBitContext *gb)

libavcodec/version.h

@@ -28,7 +28,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 54
 #define LIBAVCODEC_VERSION_MINOR 41
-#define LIBAVCODEC_VERSION_MICRO  0
+#define LIBAVCODEC_VERSION_MICRO  1
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \