Adds the lines to support ATI 4379 SATA interface and ATI SB400 bridge.

Reference: /n/sources/patch/applied/sdata-ati
Date: Tue Mar 27 22:35:31 CES 2007
Signed-off-by: lorenzobivens@gmail.com

--- /sys/src/9/pc/sdata.c	Tue Mar 27 22:34:48 2007
+++ /sys/src/9/pc/sdata.c	Tue Mar 27 22:34:37 2007
@@ -1915,6 +1915,7 @@
 		case (0x4D69<<16)|0x105A:	/* Promise Ultra/133 TX2 */
 		case (0x3373<<16)|0x105A:	/* Promise 20378 RAID */
 		case (0x3149<<16)|0x1106:	/* VIA VT8237 SATA/RAID */
+		case (0x4379<<16)|0x1002:	/* ATI 4379 SATA*/
 		case (0x3112<<16)|0x1095:	/* SiI 3112 SATA/RAID */
 			maxio = 15;
 			span = 8*1024;
@@ -1975,6 +1976,7 @@
 			 * address for the registers (0x50?).
 			 */
 			/*FALLTHROUGH*/
+		case (0x1002<<16)|0x4372:	/* ATI SB400 */
 		case (0x4376<<16)|0x1002:	/* ATI Radeon Xpress 200M */
 			break;
 		case (0x0211<<16)|0x1166:	/* ServerWorks IB6566 */