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

Since commit 878096eeb278a8ac1ccd6667af73e026f29b4cf5 (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>
diff --git a/target-lm32/helper.c b/target-lm32/helper.c
index 03fa5fb..615b44e 100644
--- a/target-lm32/helper.c
+++ b/target-lm32/helper.c
@@ -70,7 +70,7 @@
         } else {
             env->pc = env->eba + (env->exception_index * 32);
         }
-        log_cpu_state_mask(CPU_LOG_INT, env, 0);
+        log_cpu_state_mask(CPU_LOG_INT, cs, 0);
         break;
     case EXCP_BREAKPOINT:
     case EXCP_WATCHPOINT:
@@ -79,7 +79,7 @@
         env->ie |= (env->ie & IE_IE) ? IE_BIE : 0;
         env->ie &= ~IE_IE;
         env->pc = env->deba + (env->exception_index * 32);
-        log_cpu_state_mask(CPU_LOG_INT, env, 0);
+        log_cpu_state_mask(CPU_LOG_INT, cs, 0);
         break;
     default:
         cpu_abort(env, "unhandled exception type=%d\n",