Committed, CRIS port: fix fallout from time_t defaulting to 64 bits, part 2

It's been a while...  I see the CRIS port broke with the
time_t-default-to-64-bit change, observable by a few test-cases in the gcc
fortran(!) tests failing, regressing when trying a recent newlib.

This is a two-part belt-and-suspenders change: adjust the CRIS port
gettimeofday syscall (the only one in newlib/CRIS passing a time_t or
struct timeval) to handle a userspace 64-bit time_t and secondly default
time_t to 32-bit long anyway.  I considered making the local
"kernel_timeval" copy in _gettimeofday conditional on (userspace) time_t
being 64 bits, but thought it not worth bothering with the few move insns.
The effect of a 64-bit time_t is however observable as longer simulation
time when running the gcc testsuite and as bigger binaries without any
actual upside from the larger time_t size, so I thought better make the
default for this port go back to being a "long" again.

Tested by running the gcc testsuite over the three combinations of two
parts of the patch and observing the expected changes.  Committed.

newlib:
	* configure.host (cris, crisv32): Default to "long" time_t.

Signed-off-by: Hans-Peter Nilsson <hp@axis.com>

newlib/configure.host

@@ -135,6 +135,12 @@ case "${host_cpu}" in
 	machine_dir=cr16
        ;;
   cris | crisv32)
+	# The size of the (kernel_)time_t passed from or to a
+	# simulator or a Linux kernel is mandated by the
+	# gettimeofday and time system calls and fixed to 32 bits, the
+	# size of a long.  Instead of churning as 64 bits what is anyway
+	# 32 bits, it makes more sense to default to long.
+	test -z "${enable_newlib_long_time_t}" && newlib_long_time_t=yes
 	machine_dir=cris
 	;;
   crx*)