Add the MAC code for the RTL8102EL, which
seems to be in a lot of MiniITX motherboards.
Also add a diagnostic print if the macv is
unknown.

Reference: /n/sources/patch/applied/ether8169-rtl8102el
Date: Sun Jun  7 02:07:56 CES 2009
Signed-off-by: crossd@gmail.com

--- /sys/src/boot/pc/ether8169.c	Sun Jun  7 02:06:58 2009
+++ /sys/src/boot/pc/ether8169.c	Sun Jun  7 02:06:57 2009
@@ -114,6 +114,7 @@
 	Macv13		= 0x34000000,	/* RTL8101E */
 	Macv14		= 0x30800000,	/* RTL8100E */
 	Macv15		= 0x38800000,	/* RTL8100E */
+	Macv16		= 0x24800000, /* RTL8102EL */
 	Ifg0		= 0x01000000,	/* Interframe Gap 0 */
 	Ifg1		= 0x02000000,	/* Interframe Gap 1 */
 };
@@ -518,6 +519,7 @@
 	cplusc |= Rxchksum|Mulrw;
 	switch(ctlr->macv){
 	default:
+		print("unknown macv: 0x%08x\n", ctlr->macv);
 		return -1;
 	case Macv01:
 		ctlr->mtps = HOWMANY(Mps, 32);
@@ -553,6 +555,7 @@
 	case Macv12:
 	case Macv14:
 	case Macv15:
+	case Macv16:
 		break;
 	}
 
--- /sys/src/9/pc/ether8169.c	Sun Jun  7 02:07:01 2009
+++ /sys/src/9/pc/ether8169.c	Sun Jun  7 02:06:59 2009
@@ -107,6 +107,7 @@
 	Macv13		= 0x34000000,	/* RTL8101E */
 	Macv14		= 0x30800000,	/* RTL8100E */
 	Macv15		= 0x38800000,	/* RTL8100E */
+	Macv16		= 0x24800000, /* RTL8192EL */
 	Ifg0		= 0x01000000,	/* Interframe Gap 0 */
 	Ifg1		= 0x02000000,	/* Interframe Gap 1 */
 };
@@ -697,6 +698,7 @@
 	cplusc |= /*Rxchksum|*/Mulrw;
 	switch(ctlr->macv){
 	default:
+		print("unknown macv: 0x%lx\n", ctlr->macv);
 		return -1;
 	case Macv01:
 		ctlr->mtps = HOWMANY(Mps, 32);
@@ -732,6 +734,7 @@
 	case Macv12:
 	case Macv14:
 	case Macv15:
+	case Macv16:
 		break;
 	}