domd: use drmkms in non weston build for libsdl2

In our configuration, QEMU uses libsdl2 as a backend for display.
At the same time, in weston build, libsdl2 uses weston window for
display output. In non weston build it is proposed to use drmkms
for the display output.

Signed-off-by: Andrii Chepurnyi <[email protected]>

meta-xt-driver-domain/recipes-core/systemd/files/sdl-env-kmsdrm.conf

@@ -0,0 +1,2 @@
+[Manager]
+DefaultEnvironment="SDL_VIDEODRIVER=kmsdrm"

meta-xt-driver-domain/recipes-core/systemd/systemd_%.bbappend

@@ -2,7 +2,8 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
 
 SRC_URI:append = " \
     file://ip_forward.conf \
-    file://sdl-env.conf \
+    file://sdl-env-wayland.conf \
+    file://sdl-env-kmsdrm.conf \
 "
 
 PACKAGECONFIG:append = " networkd"
@@ -14,5 +15,10 @@ USERADD_ERROR_DYNAMIC = "warn"
 do_install:append() {
     install -m 0644 ${WORKDIR}/ip_forward.conf ${D}${sysconfdir}/tmpfiles.d/
     install -d ${D}${sysconfdir}/systemd/system.conf.d/
-    install -m 0644 ${WORKDIR}/sdl-env.conf ${D}${sysconfdir}/systemd/system.conf.d/
+    # Check if 'weston' is included in the DISTRO_FEATURES or PACKAGECONFIG
+    if ${@bb.utils.contains('DISTRO_FEATURES', 'wayland', 'true', 'false', d)}; then
+        install -m 0644 ${WORKDIR}/sdl-env-wayland.conf ${D}${sysconfdir}/systemd/system.conf.d/sdl-env.conf
+    else
+        install -m 0644 ${WORKDIR}/sdl-env-kmsdrm.conf ${D}${sysconfdir}/systemd/system.conf.d/sdl-env.conf
+    fi
 }