qt-multi-screen-compositor: Add systemd units for imx6ull and the other platforms

imx6ull uses the linuxfb backend,
imx6 and imx8m* using eglfs.

recipes-qt/qt-multi-screen-compositor/files/mx6ull/qt-multi-screen-compositor@.service

+[Unit]
+Description=Qt multi-screen Compositor
+RequiresMountsFor=/run
+Conflicts=plymouth-quit.service
+After=systemd-user-sessions.service plymouth-quit-wait.service systemd-logind.service
+
+[Service]
+User=%i
+PAMName=login
+Environment=XDG_RUNTIME_DIR=/var/run/user/0
+Environment=QT_QPA_FONTDIR=/usr/share/fonts/truetype
+Environment=QT_QPA_PLATFORM=linuxfb
+Environment=QT_QUICK_BACKEND=software
+
+# Use this if the touch entry is rotated compared to the screen
+# as the normal libinput calibration is not yet implemented
+# this is the only way of touch calibration available
+# Environment=QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=rotate=180
+StandardError=journal
+PermissionsStartOnly=true
+IgnoreSIGPIPE=no
+
+#Type=notify
+#NotifyAccess=all
+Type=simple
+
+ExecStart=/usr/bin/multi-screen

recipes-qt/qt-multi-screen-compositor/files/qt-multi-screen-compositor@.service

@@ -9,11 +9,15 @@ User=%i
 PAMName=login
 Environment=XDG_RUNTIME_DIR=/var/run/user/0
 Environment=QT_QPA_FONTDIR=/usr/share/fonts/truetype
-Environment=QT_QPA_PLATFORM=wayland
-Environment=QT_QPA_EGLFS_KMS_CONFIG=/etc/kms.conf
+Environment=QT_QPA_PLATFORM=eglfs
+
 Environment=QT_QPA_EGLFS_INTEGRATION=eglfs_kms
 Environment=QT_QPA_EGLFS_KMS_ATOMIC=1
-Environment=QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=rotate=180
+
+# Use this if the touch entry is rotated compared to the screen
+# as the normal libinput calibration is not yet implemented
+# this is the only way of touch calibration available
+# Environment=QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS=rotate=180
 StandardError=journal
 PermissionsStartOnly=true
 IgnoreSIGPIPE=no
@@ -21,4 +25,5 @@ IgnoreSIGPIPE=no
 #Type=notify
 #NotifyAccess=all
 Type=simple
-ExecStart=/usr/bin/multi-screen -platform eglfs
+
+ExecStart=/usr/bin/multi-screen