build:remove minix-sys.plist from version management.

Remove minix-sys.plist from version management it is generated by
the build system.

Change-Id: I6fc831992ea619e598130450f0f46b6fc01145ed
GPIO:further development

* Generalize GPIO handling.
* Add libs to configure gpio's clocks and pads
* Add Interrupt handling.
* Introduce mmio.h and log.h

Change-Id: I928e4c807d15031de2eede4b3ecff62df795f8ac
test41: relax maximum timer tick rate

. on ARM (hz=1000) does not give code a chance to stop the timer

Change-Id: Id626bfed088400c3c3962ddfc5e8fbe23dd2a797