env: Move set_default_vars to env.h

Move this function to the new header file and rename it so it has an env_
prefix.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/nvedit.c b/cmd/nvedit.c
index 01110e9..d1178f6 100644
--- a/cmd/nvedit.c
+++ b/cmd/nvedit.c
@@ -820,7 +820,7 @@
 	}
 	if (!all && (argc > 0)) {
 		/* Reset individual variables */
-		set_default_vars(argc, argv, env_flag);
+		env_set_default_vars(argc, argv, env_flag);
 		return 0;
 	}
 
diff --git a/env/common.c b/env/common.c
index 1fbc4a8..db2a033 100644
--- a/env/common.c
+++ b/env/common.c
@@ -92,7 +92,7 @@
 
 
 /* [re]set individual variables to their value in the default environment */
-int set_default_vars(int nvars, char * const vars[], int flags)
+int env_set_default_vars(int nvars, char * const vars[], int flags)
 {
 	/*
 	 * Special use-case: import from default environment
diff --git a/include/env.h b/include/env.h
index 8082f7a..fc3519f 100644
--- a/include/env.h
+++ b/include/env.h
@@ -187,4 +187,15 @@
  */
 void env_fix_drivers(void);
 
+/**
+ * env_set_default_vars() - reset variables to their default value
+ *
+ * This resets individual variables to their value in the default environment
+ *
+ * @nvars: Number of variables to set/reset
+ * @vars: List of variables to set/reset
+ * @flags: Flags controlling matching (H_... - see search.h)
+ */
+int env_set_default_vars(int nvars, char *const vars[], int flags);
+
 #endif
diff --git a/include/environment.h b/include/environment.h
index 7be1ef9..97d4886 100644
--- a/include/environment.h
+++ b/include/environment.h
@@ -274,9 +274,6 @@
 /* [re]set to the default environment */
 void set_default_env(const char *s, int flags);
 
-/* [re]set individual variables to their value in the default environment */
-int set_default_vars(int nvars, char * const vars[], int flags);
-
 /* Import from binary representation into hash table */
 int env_import(const char *buf, int check);