small patch for unsigned char breakage in rtl8129 driver

[Philip Blundell]

--- linux/drivers/net/rtl8129.c	Sat Nov  4 16:42:22 2000
+++ linux/drivers/net/rtl8129.c	Sat Nov  4 16:48:21 2000
@@ -271,7 +271,7 @@ struct rtl8129_private {
 	unsigned char *tx_bufs;				/* Tx bounce buffer region. */
 	dma_addr_t rx_ring_dma;
 	dma_addr_t tx_bufs_dma;
-	char phys[4];						/* MII device addresses. */
+	signed char phys[4];				/* MII device addresses. */
 	char twistie, twist_cnt;			/* Twister tune state. */
 	unsigned int tx_full:1;				/* The Tx queue is full. */
 	unsigned int full_duplex:1;			/* Full-duplex operation requested. */