The patch adds new POST tests for the Lwmon5 board. These are:

* External Watchdog test;
* dsPIC tests;
* FPGA test;
* GDC test;
* Sysmon tests.

Signed-off-by: Dmitry Rakhchev <rda@emcraft.com>
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>