keep a few more functions static.  noticed during work on 40gbe driver.

Reference: /n/atom/patch/applied2013/static82598
Date: Mon Nov 11 22:20:01 CET 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/k10/ether82598.c	Mon Nov 11 22:19:38 2013
+++ /sys/src/nix/k10/ether82598.c	Mon Nov 11 22:19:38 2013
@@ -217,7 +217,7 @@
 	char	*name;
 };
 
-Stat stattab[] = {
+static Stat stattab[] = {
 	0x4000,	"crc error",
 	0x4004,	"illegal byte",
 	0x4008,	"short packet",
@@ -374,7 +374,7 @@
 static	Rbpool	rbtab[Nctlr];
 static	int	nctlr;
 
-char*
+static char*
 cname(Ctlr *c)
 {
 	return cttab[c->type].name;
--- /sys/src/9/pc/ether82598.c	Mon Nov 11 22:19:38 2013
+++ /sys/src/9/pc/ether82598.c	Mon Nov 11 22:19:38 2013
@@ -217,7 +217,7 @@
 	char	*name;
 };
 
-Stat stattab[] = {
+static Stat stattab[] = {
 	0x4000,	"crc error",
 	0x4004,	"illegal byte",
 	0x4008,	"short packet",
@@ -374,7 +374,7 @@
 static	Rbpool	rbtab[Nctlr];
 static	int	nctlr;
 
-char*
+static char*
 cname(Ctlr *c)
 {
 	return cttab[c->type].name;
@@ -1110,15 +1110,10 @@
 		case 0x10f9:	/* 82599 cx4 */
 		case 0x10fb:	/* 82599 sfi/sfp+ */
 		case 0x10fc:	/* 82599 xaui */
-		case 0x1414:	/* x520 kx4 mezz */
 		case 0x151c:	/* 82599 base t kx/kx4 “niantic” */
-		case 0x154a:	/* x520-4 */
-		case 0x154d:	/* x520-q1 */
-		case 0x1558:	/* x520-q1 */
 			type = i82599;
 			break;
 		case 0x1528:	/* x540-at2 “twinville” */
-		case 0x1560:
 			type = x540;
 			break;
 		default:
--- /sys/src/9/pcpae/ether82598.c	Mon Nov 11 22:19:38 2013
+++ /sys/src/9/pcpae/ether82598.c	Mon Nov 11 22:19:38 2013
@@ -217,7 +217,7 @@
 	char	*name;
 };
 
-Stat stattab[] = {
+static Stat stattab[] = {
 	0x4000,	"crc error",
 	0x4004,	"illegal byte",
 	0x4008,	"short packet",
@@ -374,7 +374,7 @@
 static	Rbpool	rbtab[Nctlr];
 static	int	nctlr;
 
-char*
+static char*
 cname(Ctlr *c)
 {
 	return cttab[c->type].name;
@@ -1110,15 +1110,10 @@
 		case 0x10f9:	/* 82599 cx4 */
 		case 0x10fb:	/* 82599 sfi/sfp+ */
 		case 0x10fc:	/* 82599 xaui */
-		case 0x1414:	/* x520 kx4 mezz */
 		case 0x151c:	/* 82599 base t kx/kx4 “niantic” */
-		case 0x154a:	/* x520-4 */
-		case 0x154d:	/* x520-q1 */
-		case 0x1558:	/* x520-q1 */
 			type = i82599;
 			break;
 		case 0x1528:	/* x540-at2 “twinville” */
-		case 0x1560:
 			type = x540;
 			break;
 		default: