qtbase: enable 'linuxfb' platform plugin

This plugin uses directly the framebuffer, so it can be used in non
X11-based systems, but it oly supports software rendered content,
no opengl/es.

https://jira.digi.com/browse/DEL-2607

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-dey/recipes-qt/qt5/qtbase/ccimx6ul/qt5.sh

@@ -0,0 +1,2 @@
+# Use LINUXFB platform plugin for images without X11
+[ -f "/etc/init.d/xserver-nodm" ] || export QT_QPA_PLATFORM="linuxfb"

meta-digi-dey/recipes-qt/qt5/qtbase_%.bbappend

@@ -7,9 +7,11 @@ SRC_URI_append = " file://qt5.sh"
 PACKAGECONFIG_GL_mx6ul = "gles2"
 QT_CONFIG_FLAGS_append_mx6ul = "${@base_contains('DISTRO_FEATURES', 'x11', ' -no-eglfs', ' -eglfs', d)}"
 
-PACKAGECONFIG_append = " accessibility examples icu sql-sqlite"
+PACKAGECONFIG_append = " accessibility examples icu linuxfb sql-sqlite"
 
 do_install_append() {
 	install -d ${D}${sysconfdir}/profile.d
 	install -m 0755 ${WORKDIR}/qt5.sh ${D}${sysconfdir}/profile.d/
 }
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"