drivers/net/*/: Use static const

Using static const generally increases object text and decreases data size.
It also generally decreases overall object size.

Signed-off-by: Joe Perches <joe@perches.com>
diff --git a/drivers/net/pcmcia/nmclan_cs.c b/drivers/net/pcmcia/nmclan_cs.c
index 0a2b0f9..76683d97 100644
--- a/drivers/net/pcmcia/nmclan_cs.c
+++ b/drivers/net/pcmcia/nmclan_cs.c
@@ -1291,7 +1291,7 @@
 
 static void updateCRC(int *CRC, int bit)
 {
-  int poly[]={
+  static const int poly[]={
     1,1,1,0, 1,1,0,1,
     1,0,1,1, 1,0,0,0,
     1,0,0,0, 0,0,1,1,