x86 32-bit boot: rename bt_ioremap() to early_ioremap()

This patch renames bt_ioremap to early_ioremap, which is used in
x86_64. This makes it easier to merge i386 and x86_64 usage.

[ mingo@elte.hu: fix ]

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/io_32.h b/include/asm-x86/io_32.h
index f7b733d..059a1fe 100644
--- a/include/asm-x86/io_32.h
+++ b/include/asm-x86/io_32.h
@@ -135,20 +135,20 @@
 extern void iounmap(volatile void __iomem *addr);
 
 /*
- * bt_ioremap() and bt_iounmap() are for temporary early boot-time
+ * early_ioremap() and early_iounmap() are for temporary early boot-time
  * mappings, before the real ioremap() is functional.
  * A boot-time mapping is currently limited to at most 16 pages.
  */
-extern void bt_ioremap_init(void);
-extern void bt_ioremap_clear(void);
-extern void bt_ioremap_reset(void);
-extern void *bt_ioremap(unsigned long offset, unsigned long size);
-extern void bt_iounmap(void *addr, unsigned long size);
+extern void early_ioremap_init(void);
+extern void early_ioremap_clear(void);
+extern void early_ioremap_reset(void);
+extern void *early_ioremap(unsigned long offset, unsigned long size);
+extern void early_iounmap(void *addr, unsigned long size);
 extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys);
 
 /* Use early IO mappings for DMI because it's initialized early */
-#define dmi_ioremap bt_ioremap
-#define dmi_iounmap bt_iounmap
+#define dmi_ioremap early_ioremap
+#define dmi_iounmap early_iounmap
 #define dmi_alloc alloc_bootmem
 
 /*