Update broken web addresses in arch directory.

The patch below updates broken web addresses in the arch directory.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 3ad59dd..4606248 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2175,10 +2175,14 @@
 	bool "TURBOchannel support"
 	depends on MACH_DECSTATION
 	help
-	  TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
-	  processors.  Documentation on writing device drivers for TurboChannel
-	  is available at:
-	  <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
+	  TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
+	  processors.  TURBOchannel programming specifications are available
+	  at:
+	  <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
+	  and:
+	  <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
+	  Linux driver support status is documented at:
+	  <http://www.linux-mips.org/wiki/DECstation>
 
 #config ACCESSBUS
 #	bool "Access.Bus support"