touch calibration: Add tool to convert matrix from tslib to libinput

Libinput uses another way to describe the calibration, though we have the tslib matrix stored in the xml files. This tool and a udev rule are used to convert the tslib matrix from pointercal on the fly. Also removes weston-calibrator, so only weston-touch-calibrator is available in the image.

BCS 746-000087

recipes-bsp/packagegroups/packagegroup-guf-small.bb

@@ -9,5 +9,8 @@ PACKAGES = "\
 RDEPENDS_${PN} = "\
 	packagegroup-guf-minimal \
 	vim \
+	tslib-calibrate \
+	tslib-tests \
+	touchcal-conv \
 "