libraw1394: fix tarball URL

The website of libraw1394 isn't anymore on http://www.linux1394.org.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libraw1394/libraw1394.mk

@@ -6,7 +6,7 @@
 
 LIBRAW1394_VERSION:=1.2.1
 LIBRAW1394_SOURCE:=libraw1394-$(LIBRAW1394_VERSION).tar.gz
-LIBRAW1394_SITE:=http://www.linux1394.org/dl
+LIBRAW1394_SITE:=http://www.kernel.org/pub/linux/libs/ieee1394/
 LIBRAW1394_DIR:=$(BUILD_DIR)/libraw1394-$(LIBRAW1394_VERSION)
 
 $(DL_DIR)/$(LIBRAW1394_SOURCE):