package/mesa3d: add dependency to host-python-glslang for Vulkan drivers

glslangValidator is needed since mesa3d-22.3.0:
https://gitlab.freedesktop.org/mesa/mesa/-/commit/9786d9ef2abb45a4e832cf1347581e3ca3aae9f0#3968b0378040deeb22000cfaf80d720905d989fc_0_130

Fixes:
http://autobuild.buildroot.net/results/06a/06a429dcdf776ca32de4570f9a408da6a7e7333d/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mesa3d/mesa3d.mk

@@ -136,6 +136,7 @@ ifeq ($(BR2_PACKAGE_MESA3D_VULKAN_DRIVER),)
 MESA3D_CONF_OPTS += \
 	-Dvulkan-drivers=
 else
+MESA3D_DEPENDENCIES += host-python-glslang
 MESA3D_CONF_OPTS += \
 	-Dvulkan-drivers=$(subst $(space),$(comma),$(MESA3D_VULKAN_DRIVERS-y))
 endif