In order to have a more similar wrpc-sw using wrnic_defconfig or using
spec_defconfig

In case we are using the WR_NIC_CPU option we redirect ARP & ICMP to
external fabric (controlled by NIC driver on host CPU).
We have also add this option to Kconfig and update the wrnic_defconfig
used by wr-starting-kit

- updated WB-generated file
- added info about configurable clock domain of streamers data

- hdl software reset
- fixed latency timeout
- fixed latency statistics

This is needed for PPSGen handling cleanup. Now PPSGen is controlled by PPSi.

When testing with newer compilers and newlib, a mismatch surfaced in
the definition of intptr_t, int32_t, uint32_t.  I don't know why the
library header gets picked up.

This patch, though ugly, fixes the problem by using the "ifdef" names
found in lm32-elf/include/sys/_stdint.h (the offending file).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

If you use CROSS_COMPILE from the environment, the current system will
try to build host code with the lm32 compiler, and the build stops at
the very beginning. This fixes the problem in the most trivial way.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>