qt5_opengl: Disable Vulkan feature

With Mesa-21, Qt5 detects Vulkan to be enabled, even though it is not
supported in Genode. Also add DRM library in Qt5 run script.

issue #4254

repos/libports/lib/mk/qt5_base.mk

@@ -25,6 +25,7 @@ built.tag: qmake_prepared.tag qmake_root/lib/ld.lib.so
 		-no-feature-dbus \
 		-no-feature-networkinterface \
 		-no-feature-process \
+		-no-feature-vulkan \
 		$(QT5_OUTPUT_FILTER)
 
 	@#

repos/libports/run/qt5_common.inc

@@ -7,6 +7,7 @@ import_from_depot [depot_user]/pkg/[drivers_interactive_pkg] \
                   [depot_user]/src/expat \
                   [depot_user]/src/global_keys_handler \
                   [depot_user]/src/init \
+                  [depot_user]/src/libdrm \
                   [depot_user]/src/libc \
                   [depot_user]/src/mesa \
                   [depot_user]/src/nitpicker \