log: Change log_cpu_state[_mask]() argument to CPUState

Since commit 878096eeb2 (cpu: Turn
cpu_dump_{state,statistics}() into CPUState hooks) CPUArchState is no
longer needed.

Add documentation and make the functions available through qemu/log.h
outside NEED_CPU_H to allow use in qom/cpu.c. Moving them to qom/cpu.h
was not yet possible due to convoluted include paths, so that some
devices grow an implicit and unneeded dependency on qom/cpu.h for now.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
[AF: Simplified mb_cpu_do_interrupt() and do_interrupt_all() changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>

target-sparc/int64_helper.c

@@ -92,7 +92,7 @@ void sparc_cpu_do_interrupt(CPUState *cs)
         }
 
         qemu_log("%6d: %s (v=%04x)\n", count, name, intno);
-        log_cpu_state(env, 0);
+        log_cpu_state(cs, 0);
 #if 0
         {
             int i;