package/mpv: needs gcc >= 4.9

Fixes:
http://autobuild.buildroot.net/results/e41/e41f0a779d46565d448a1d20cf5e17060d9a70b8/

Quoted from build/config.log
err: ../test.c:1:23: fatal error: stdatomic.h: No such file or directory

This header was added with gcc-4.9:
https://gcc.gnu.org/gcc-4.9/changes.html
"ISO C11 atomics (the _Atomic type specifier and qualifier and the
 <stdatomic.h> header) are now supported."

According to
https://github.com/mpv-player/mpv/commit/06718da79c79a98d5524f42d034b0d406b14e04c
"In theory, a user can still use --disable-stdatomic to enable the
 emulation code, but that's sort of hidden. Actual support will be
 removed after the next release or so."

Although adding --disable-stdatomic could fix the current issue we
require gcc >= 4.9 now to follow the recommendation from upstream.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/mpv/Config.in

@@ -4,7 +4,7 @@ config BR2_PACKAGE_MPV
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # libass
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # libass
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # C11/stdatomic.h
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC
 	select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
 	select BR2_PACKAGE_FFMPEG
@@ -26,10 +26,10 @@ config BR2_PACKAGE_MPV
 
 	  https://mpv.io/
 
-comment "mpv needs a toolchain w/ C++, threads, gcc >= 4.8"
+comment "mpv needs a toolchain w/ C++, threads, gcc >= 4.9"
 	depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
 		!BR2_INSTALL_LIBSTDCPP || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9

package/tovid/Config.in

@@ -6,7 +6,7 @@ config BR2_PACKAGE_TOVID
 	depends on BR2_USE_WCHAR
 	depends on BR2_PACKAGE_PYTHON || BR2_PACKAGE_PYTHON3
 	depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
-	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # mpv
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # mpv
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC # mpv
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # mpv
 	depends on !BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC # mpv
@@ -29,13 +29,13 @@ config BR2_PACKAGE_TOVID
 
 	  http://tovid.wikia.com/wiki/Installing_tovid
 
-comment "tovid needs a toolchain w/ threads, C++, wchar, gcc >= 4.8"
+comment "tovid needs a toolchain w/ threads, C++, wchar, gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_TOOLCHAIN_HAS_THREADS \
-		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 \
+		|| !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 \
 		|| !BR2_INSTALL_LIBSTDCPP \
 		|| !BR2_USE_WCHAR
 	depends on !BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC
@@ -46,5 +46,5 @@ comment "tovid depends on python or python3"
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 	depends on !BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC