libxcb: Update to version 1.7

Signed-off-by: Saul Wold <Saul.Wold@intel.com>

diff --git a/meta/recipes-graphics/xcb/libxcb_1.6.bb b/meta/recipes-graphics/xcb/libxcb_1.7.bb
similarity index 100%
rename from meta/recipes-graphics/xcb/libxcb_1.6.bb
rename to meta/recipes-graphics/xcb/libxcb_1.7.bb