configure: bump randrproto min requirements to 1.4.0

Needed to build latest randr stuff.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

configure.ac

@@ -787,7 +787,7 @@ APPLEWMPROTO="applewmproto >= 1.4"
 
 dnl Required modules
 XPROTO="xproto >= 7.0.22"
-RANDRPROTO="randrproto >= 1.2.99.3"
+RANDRPROTO="randrproto >= 1.4.0"
 RENDERPROTO="renderproto >= 0.11"
 XEXTPROTO="xextproto >= 7.1.99"
 INPUTPROTO="inputproto >= 2.1.99.6"