Unify programmer parameter extraction

Make programmer_param static by converting all users to extract_programmer_param.
Programmer parameters can no longer be separated with a
colon, they have to be separated with a comma.

Corresponding to flashrom svn r1072.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
diff --git a/chipset_enable.c b/chipset_enable.c
index 855cd2b..5c16259 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -300,7 +300,7 @@
 	int max_decode_fwh_decode = 0;
 	int contiguous = 1;
 
-	idsel = extract_param(&programmer_param, "fwh_idsel", ",:");
+	idsel = extract_programmer_param("fwh_idsel");
 	if (idsel && strlen(idsel)) {
 		fwh_conf = (uint32_t)strtoul(idsel, NULL, 0);