milkymist: update specification URLs

The old milkymist.org domain just forwards to mm-labs.hk nowadays. I've
created a mirror of the documents.

Signed-off-by: Michael Walle <michael@walle.cc>

hw/audio/milkymist-ac97.c

@@ -18,7 +18,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/ac97.pdf
+ *   http://milkymist.walle.cc/socdoc/ac97.pdf
  */
 
 #include "qemu/osdep.h"

hw/char/milkymist-uart.c

@@ -18,7 +18,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/uart.pdf
+ *   http://milkymist.walle.cc/socdoc/uart.pdf
  */
 
 #include "qemu/osdep.h"

hw/display/milkymist-tmu2.c

@@ -20,7 +20,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/tmu2.pdf
+ *   http://milkymist.walle.cc/socdoc/tmu2.pdf
  *
  */
 

hw/display/milkymist-vgafb.c

@@ -19,7 +19,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/vgafb.pdf
+ *   http://milkymist.walle.cc/socdoc/vgafb.pdf
  */
 
 #include "qemu/osdep.h"

hw/misc/milkymist-hpdmc.c

@@ -18,7 +18,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/hpdmc.pdf
+ *   http://milkymist.walle.cc/socdoc/hpdmc.pdf
  */
 
 #include "qemu/osdep.h"

hw/misc/milkymist-pfpu.c

@@ -18,7 +18,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/pfpu.pdf
+ *   http://milkymist.walle.cc/socdoc/pfpu.pdf
  *
  */
 

hw/sd/milkymist-memcard.c

@@ -18,7 +18,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/memcard.pdf
+ *   http://milkymist.walle.cc/socdoc/memcard.pdf
  */
 
 #include "qemu/osdep.h"

hw/timer/milkymist-sysctl.c

@@ -18,7 +18,7 @@
  *
  *
  * Specification available at:
- *   http://www.milkymist.org/socdoc/sysctl.pdf
+ *   http://milkymist.walle.cc/socdoc/sysctl.pdf
  */
 
 #include "qemu/osdep.h"