target-i386: Change do_smm_enter() argument to X86CPU

Prepares for log_cpu_state_mask() changing argument to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/target-i386/smm_helper.c b/target-i386/smm_helper.c
index 2489573..78abe5b 100644
--- a/target-i386/smm_helper.c
+++ b/target-i386/smm_helper.c
@@ -24,7 +24,7 @@
 
 #if defined(CONFIG_USER_ONLY)
 
-void do_smm_enter(CPUX86State *env)
+void do_smm_enter(X86CPU *cpu)
 {
 }
 
@@ -40,8 +40,9 @@
 #define SMM_REVISION_ID 0x00020000
 #endif
 
-void do_smm_enter(CPUX86State *env)
+void do_smm_enter(X86CPU *cpu)
 {
+    CPUX86State *env = &cpu->env;
     target_ulong sm_state;
     SegmentCache *dt;
     int i, offset;