x86: Rename state to bmi

Use the common name for the struct, in preparation for passing it around
between functions.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h
index 13a0885..b592057 100644
--- a/arch/x86/include/asm/zimage.h
+++ b/arch/x86/include/asm/zimage.h
@@ -42,7 +42,7 @@
 	ZBOOT_STATE_COUNT	= 5,
 };
 
-extern struct bootm_info state;
+extern struct bootm_info bmi;
 
 /**
  * zboot_load() - Load a zimage