package/ffmpeg: broken on or1k with gcc < 9.x

Fixes:
http://autobuild.buildroot.net/results/961/9618aeffa7d72162d6643a89470c4a01d044a2dc/

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

package/ffmpeg/Config.in

@@ -14,6 +14,8 @@ config BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
 	# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467 for more
 	# details.
 	depends on !BR2_m68k_cf
+	# assertion fail in binutils
+	depends on !(BR2_or1k && !BR2_TOOLCHAIN_GCC_AT_LEAST_9)
 
 menuconfig BR2_PACKAGE_FFMPEG
 	bool "ffmpeg"