qtbase: Add gif

To add qgif to the Qt environment add the gif PACKAGECONFIG.

(cherry picked from commit cd3c70f1)

recipes-qt/qt5/qtbase_%.bbappend

 PACKAGECONFIG_DISTRO:append = " ${@bb.utils.contains('DISTRO_FEATURES', 'opengl', 'gbm gles2 kms eglfs', 'no-opengl', d)} "
 PACKAGECONFIG_DISTRO:append = " linuxfb "
+PACKAGECONFIG_DISTRO:append = " gif "
 PACKAGECONFIG_DISTRO:append = " sql-sqlite2 sql-sqlite sql-mysql sql-psql "
 PACKAGECONFIG_DISTRO:append = " examples "