api: Rename api_init() to legacy_api_init()

Complete the rename of this API so that it is clear it is considered
deprecated.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/legacy_api.h

@@ -8,13 +8,15 @@
 #define __LEGACY_API_H
 
 /**
- * api_init() - Initialize API for external applications
+ * legacy_api_init() - Initialize legacy API for external applications
  *
  * Initialize API for external (standalone) applications running on top of
  * U-Boot. It is called during the generic post-relocation init sequence.
  *
+ * Note that this is deprecated.
+ *
  * Return: 0 if OK
  */
-int api_init(void);
+int legacy_api_init(void);
 
 #endif

legacy_api/api.c

@@ -638,7 +638,7 @@ int syscall(int call, int *retval, ...)
 	return 1;
 }
 
-int api_init(void)
+int legacy_api_init(void)
 {
 	struct api_signature *sig;
 

legacy_api/api_private.h

@@ -8,7 +8,7 @@
 #ifndef _API_PRIVATE_H_
 #define _API_PRIVATE_H_
 
-int	api_init(void);
+int	legacy_api_init(void);
 void	platform_set_mr(struct sys_info *, unsigned long, unsigned long, int);
 int	platform_sys_info(struct sys_info *);