This big commit port qeditor from v1 to v2 register file format. Although
the display code was much simplified, the edit code had to be rewritten.
The new code also brings many improvement to the register display widget.

The new code also compiles with both Qt4 and Qt5, although it is recommended
to use Qt5 to get some improvements, especially in the layout of editor.

Change-Id: I24633ac37a144f25d9e705b565654269ec9cfbd3

Change-Id: I7834bc09b21f2a2d84b1c9edbbe1188372809c63
Reviewed-on: http://gerrit.rockbox.org/983
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>

The code was a mess with respect to soc handling: some code just plain copied
the SoC descriptor which are big objects, some was using indexes. The new soc
factor out everything in a few classes which hide these ugly details so that
descriptors are never copied.

Change-Id: I17af8b47f997a528b58221621389d42d24fded93

This tool allows one to explore any register map. Register dumps
(like produced by hwstub tools) can be loaded and decoded by the
tool. Finally some analysers are provided for specific soc analysis
like clock tree and emi on imx233 for example.

Change-Id: Iaf81bd52d15f3e44ab4fe9bc039153fcf60cf92a