net: dlink: fix several spelling mistakes in comments

This patch fixes multiple spelling mistakes in dl2k driver comments:

- "deivices" -> "devices"
- "Ttransmit" -> "Transmit"
- "catastronphic" -> "catastrophic"
- "Extened" -> "Extended"

Also fix incorrect unit description: `rx_timeout` uses 640ns increments,
not 64ns.
- "64ns" -> "640ns"

These are comment-only changes and do not affect runtime behavior.

Signed-off-by: Yeounsu Moon <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/dlink/dl2k.c

···
 module_param(rx_flow, int, 0);
 module_param(copy_thresh, int, 0);
 module_param(rx_coalesce, int, 0);	/* Rx frame count each interrupt */
-module_param(rx_timeout, int, 0);	/* Rx DMA wait time in 64ns increments */
+module_param(rx_timeout, int, 0);  /* Rx DMA wait time in 640ns increments */
 module_param(tx_coalesce, int, 0); /* HW xmit count each TxDMAComplete */
 
 
···
 	np->link_status = 0;
 	/* Set media and reset PHY */
 	if (np->phy_media) {
-		/* default Auto-Negotiation for fiber deivices */
+		/* default Auto-Negotiation for fiber devices */
 	 	if (np->an_enable == 2) {
 			np->an_enable = 1;
 		}
···
 	frame_id = (tx_status & 0xffff0000);
 	printk (KERN_ERR "%s: Transmit error, TxStatus %4.4x, FrameId %d.\n",
 		dev->name, tx_status, frame_id);
-	/* Ttransmit Underrun */
+	/* Transmit Underrun */
 	if (tx_status & 0x10) {
 		dev->stats.tx_fifo_errors++;
 		dw16(TxStartThresh, dr16(TxStartThresh) + 0x10);
···
 		get_stats (dev);
 	}
 
-	/* PCI Error, a catastronphic error related to the bus interface
+	/* PCI Error, a catastrophic error related to the bus interface
 	   occurs, set GlobalReset and HostReset to reset. */
 	if (int_status & HostError) {
 		printk (KERN_ERR "%s: HostError! IntStatus %4.4x.\n",

drivers/net/ethernet/dlink/dl2k.h

···
 	PCS_ESR = 15,
 };
 
-/* IEEE Extened Status Register */
+/* IEEE Extended Status Register */
 enum _mii_esr {
 	MII_ESR_1000BX_FD = 0x8000,
 	MII_ESR_1000BX_HD = 0x4000,