env: Move env_set_ulong() to env.h

Move env_set_ulong() over to the new header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/include/bootcount.h b/include/bootcount.h
index daee843..8fa8cf8 100644
--- a/include/bootcount.h
+++ b/include/bootcount.h
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/byteorder.h>
+#include <env.h>
 
 #ifdef CONFIG_DM_BOOTCOUNT
 
diff --git a/include/common.h b/include/common.h
index 100eac6..283cb23 100644
--- a/include/common.h
+++ b/include/common.h
@@ -200,15 +200,6 @@
  */
 int env_set(const char *varname, const char *value);
 
-/**
- * env_set_ulong() - set an environment variable to an integer
- *
- * @varname: Variable to adjust
- * @value: Value to set for the variable (will be converted to a string)
- * @return 0 if OK, 1 on error
- */
-int env_set_ulong(const char *varname, ulong value);
-
 void	pci_init_board(void);
 
 /* common/exports.c */
diff --git a/include/env.h b/include/env.h
index 5c780f3..8898b78 100644
--- a/include/env.h
+++ b/include/env.h
@@ -64,6 +64,15 @@
 int env_get_f(const char *name, char *buf, unsigned int len);
 
 /**
+ * env_set_ulong() - set an environment variable to an integer
+ *
+ * @varname: Variable to adjust
+ * @value: Value to set for the variable (will be converted to a string)
+ * @return 0 if OK, 1 on error
+ */
+int env_set_ulong(const char *varname, ulong value);
+
+/**
  * env_set_hex() - set an environment variable to a hex value
  *
  * @varname: Variable to adjust