mesa: ship /etc/drirc in mesa-megadriver

Many years not shipping the stub drirc seemed like a good idea,
but now it has content and is essential for some applications to run.

Following patches in master, ship this file in mesa-megadriver.

(From OE-Core rev: fbb688ab3eeca1bbfbaaaaffd8c81fd8052bcc68)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/mesa/mesa.inc

@@ -141,8 +141,6 @@ do_install_append () {
     rm -f ${D}${libdir}/gallium-pipe/*.la
     rm -f ${D}${libdir}/gbm/*.la
 
-    # it was packaged in libdricore9.1.3-1 and preventing upgrades when debian.bbclass was used 
-    rm -f ${D}${sysconfdir}/drirc
     chrpath --delete ${D}${libdir}/dri/*_dri.so || true
 
     # libwayland-egl has been moved to wayland 1.15+
@@ -209,8 +207,8 @@ PACKAGESPLITFUNCS_prepend = "mesa_populate_packages "
 
 PACKAGES_DYNAMIC += "^mesa-driver-.*"
 
-FILES_${PN} += "${sysconfdir}/drirc"
-FILES_mesa-megadriver = "${libdir}/dri/*"
+FILES_${PN} = ""
+FILES_mesa-megadriver = "${libdir}/dri/* ${sysconfdir}"
 FILES_mesa-vulkan-drivers = "${libdir}/libvulkan_*.so ${datadir}/vulkan"
 FILES_libegl-mesa = "${libdir}/libEGL.so.*"
 FILES_libgbm = "${libdir}/libgbm.so.*"