Globalize envmatch()

The newly introduced API (routines related to env vars) will need to call
it.

Signed-off-by: Rafal Zabdyr <armo@semihalf.com>
diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c
index 6770408..dd263b6 100644
--- a/common/cmd_nvedit.c
+++ b/common/cmd_nvedit.c
@@ -81,8 +81,6 @@
 /************************************************************************
 ************************************************************************/
 
-static int envmatch (uchar *, int);
-
 /*
  * Table with supported baudrates (defined in config_xyz.h)
  */
@@ -576,8 +574,7 @@
  * If the names match, return the index for the value2, else NULL.
  */
 
-static int
-envmatch (uchar *s1, int i2)
+int envmatch (uchar *s1, int i2)
 {
 
 	while (*s1 == env_get_char(i2++))