[i386] Move real_to_user() to realmode.h

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/arch/i386/include/librm.h

 extern uint16_t __text16 ( rm_ds );
 #define rm_ds __use_text16 ( rm_ds )
 
-/**
- * Convert segment:offset address to user buffer
- *
- * @v segment		Real-mode segment
- * @v offset		Real-mode offset
- * @ret buffer		User buffer
- */
-static inline __always_inline userptr_t
-real_to_user ( unsigned int segment, unsigned int offset ) {
-	return ( phys_to_user ( ( segment << 4 ) + offset ) );
-}
-
 extern uint16_t copy_user_to_rm_stack ( userptr_t data, size_t size );
 extern void remove_user_from_rm_stack ( userptr_t data, size_t size );
 

src/arch/i386/include/realmode.h

  * assembler output to make sure that it's doing the right thing.
  */
 
+/**
+ * Convert segment:offset address to user buffer
+ *
+ * @v segment		Real-mode segment
+ * @v offset		Real-mode offset
+ * @ret buffer		User buffer
+ */
+static inline __always_inline userptr_t
+real_to_user ( unsigned int segment, unsigned int offset ) {
+	return ( phys_to_user ( ( segment << 4 ) + offset ) );
+}
+
 /**
  * Copy data to base memory
  *

src/arch/i386/interface/pxe/pxe_tftp.c

 #include <ipxe/open.h>
 #include <ipxe/process.h>
 #include <ipxe/uri.h>
+#include <realmode.h>
 #include <pxe.h>
 
 /** A PXE TFTP connection */

src/arch/i386/interface/pxe/pxe_udp.c

 #include <ipxe/udp.h>
 #include <ipxe/uaccess.h>
 #include <ipxe/process.h>
+#include <realmode.h>
 #include <pxe.h>
 
 /*