Fix BIOS default geometry on pc98.

PR:		kern/72225
Submitted by:	Hirokazu WATANABE <wnabe@par.odn.ne.jp>

sys/i386/i386/autoconf.c

@@ -147,7 +147,11 @@ configure_final(dummy)
 			 * when the get-disk-geometry interrupt fails.  Skip
 			 * drives that have this geometry.
 			 */
+#ifdef PC98
+			if (bios_geom == 0x4f020f)
+#else
 			if (bios_geom == 0x4f010f)
+#endif
 				continue;
 
 			printf(" %x:%08lx ", i, bios_geom);