[Precise]HID: multitouch: support more eGalaxis device

[ming.lei at canonical.com]

BugLink: http://bugs.launchpad.net/bugs/913164

== Precise SRU Justification ==

This bug is preventing users from using many eGalaxis touchscreen.

== Fix ==
Both the three patches have been in upstream 3.4 rc:

2ce09df47b67f16367272f63f85f4cc991e6009a
	HID: multitouch: add support for eGalax 0x722a

commit 1b723e8dc81b23141bfb8991e002073b17fd0199
	HID: multitouch: correct eGalax a001 protocol

commit fd1d152583e6ce02b47cb7315295ab58014aa26d
	HID: multitouch: add more eGalax devices

GIT: [PATCH 1/3] HID: multitouch: correct eGalax a001 protocol
GIT: [PATCH 2/3] HID: multitouch: add more eGalax devices
GIT: [PATCH 3/3] HID: multitouch: add support for eGalax 0x722a