package/qt5/qt5webengine: use bundled ffmpeg

Buildroot has moved to a modern ffmpeg, and the version of Chromium
part of qtwebengine is not ready to work with this modern version of
ffmpeg. While Chromium has been updated upstream to support a more
recent ffmpeg, it requires the backport of too many patches, so let's
use the bundled ffmpeg.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt5/qt5webengine/Config.in

@@ -29,7 +29,7 @@ config BR2_PACKAGE_QT5WEBENGINE
 	depends on BR2_TOOLCHAIN_USES_GLIBC # execinfo.h, mallinfo
 	depends on BR2_HOST_GCC_AT_LEAST_4_9 # qt5base-icu
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_8 # re2
-	depends on BR2_TOOLCHAIN_HAS_THREADS # ffmpeg, libglib2, libvpx, qt5base-dbus
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libglib2, libvpx, qt5base-dbus
 	depends on BR2_USE_WCHAR # libglib2
 	depends on BR2_PACKAGE_QT5_GL_AVAILABLE # qt5declarative, qt5base-eglfs
 	depends on BR2_PACKAGE_HAS_LIBEGL # qt5base-eglfs
@@ -40,7 +40,6 @@ config BR2_PACKAGE_QT5WEBENGINE
 	# flag (for 64-bits, it adds the -m64 flag).
 	# https://github.com/v8/v8/blob/5.6.326.55/gypfiles/toolchain.gypi#L1036-L1037
 	select BR2_HOSTARCH_NEEDS_IA32_COMPILER if !BR2_ARCH_IS_64 # v8/chromium
-	select BR2_PACKAGE_FFMPEG
 	select BR2_PACKAGE_LCMS2
 	select BR2_PACKAGE_LIBEVENT
 	select BR2_PACKAGE_LIBGLIB2

package/qt5/qt5webengine/qt5webengine.mk

@@ -70,7 +70,6 @@ QT5WEBENGINE_DEPENDENCIES += \
 	host-python3 \
 	host-webp \
 	host-zlib \
-	ffmpeg \
 	freetype \
 	jpeg \
 	lcms2 \
@@ -85,7 +84,6 @@ QT5WEBENGINE_DEPENDENCIES += \
 
 QT5WEBENGINE_CONF_OPTS += \
 	-webengine-embedded-build \
-	-webengine-ffmpeg \
 	-webengine-opus \
 	-webengine-webchannel \
 	-webengine-webp \