Changeset f2180e0f in rtems for cpukit

Patch from Jimen Ching <jimen@…>:

Please take a look at this new patch. It contains a cleaner implementation
of the reset operation. These patches are against 4.0.0. But the files
did not change from the 3.6.0 release. Also, the cpu.h patch below still
applies. I.e. instead of using i960ca_PRCB, use i960_PRCB.

Explanation:

The previous patch removed the use of the reset instruction,
because it always fails. But this was due to the fact that
some of the registers were corrupted by the re-init procedure.
The new patches save and restore those registers when a re-init
is done.