gst1-plugins-bad: build Intel QuickSync plugin only on x86

Intel Media SDK lacks support for many architectures and leads to build
failing. As the QuickSync hardware feature is anyway only supported on
x86 CPUs simply don't build the plugin on other platforms.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

multimedia/gst1-plugins-bad/Makefile

@@ -218,6 +218,7 @@ MESON_ARGS += \
 	-Dopenni2=disabled \
 	-Dopensles=disabled \
 	-Dopus=$(if $(CONFIG_PACKAGE_gst1-mod-opusparse),en,dis)abled \
+	-Dqsv=$(if $(CONFIG_i386)$(CONFIG_i686)$(CONFIG_x86_64),en,dis)abled \
 	-Dresindvd=disabled \
 	-Drsvg=disabled \
 	-Drtmp=disabled \