build: use a unique and future-proof gateware name

The file I uploaded to ohwr (wrs3-gw-v3.0-20120801.tar.gz) is not
expected to be renamed or overwritten in the future, so this commit
and the following ones will always build properly.

We had this problem with the previous file name being replaced, so
older commits didn't build any more for lack of the required gateware
file or md5sum errors.

build/download-info

@@ -18,6 +18,10 @@ barebox-2012.05.0.tar.bz2       208495f31b832eb6ae0c887787431def \
 linux-2.6.39.tar.bz2            1aab7a741abe08d42e8eccf20de61e05 \
    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.39.tar.bz2
 
+# our gateware binaries
+wrs3-gw-v3.0-20120801.tar.gz    28a7ac3ec004d3e441c232fa125d820a \
+http://www.ohwr.org/attachments/download/1485/wrs3-gw-v3.0-20120801.tar.gz
+
 # buildroot core and packages
 buildroot-2011.11.tar.bz2        7b852f4ef17c63857ca7b9388b782070 \
    http://www.buildroot.org/downloads/buildroot-2011.11.tar.bz2
@@ -126,7 +130,3 @@ uClibc-0.9.32.tar.bz2            cfcb6c25d8ebe12817499d8749ee8ae1 \
 
 zlib-1.2.5.tar.bz2               be1e89810e66150f5b0327984d8625a0 \
    http://kent.dl.sourceforge.net/sourceforge/libpng/zlib-1.2.5.tar.bz2
-
-wrs3-gw.tar.gz                   28a7ac3ec004d3e441c232fa125d820a \
-   http://www.ohwr.org/attachments/download/1474/wrs3-gw.tar.gz
-

build/scripts/wrs_build_gateware

@@ -27,7 +27,7 @@ if [ "$WRS_HW_DIR" != "" ]; then
 	cp ${WRS_HW_DIR}/syn/scb_8ports/scb_top_synthesis.bin ${WRS_OUTPUT_DIR}/images/wr/lib/firmware/8ports_mb.bin
 	cp ${WRS_HW_DIR}/syn/scb_18ports/scb_top_synthesis.bin ${WRS_OUTPUT_DIR}/images/wr/lib/firmware/18ports_mb.bin
 else
-	tarname=wrs3-gw.tar.gz
+	tarname="wrs3-gw-v3.0-20120801.tar.gz"
 	wrs_download $tarname
 	tar xzf $WRS_DOWNLOAD_DIR/$tarname -C ${WRS_OUTPUT_DIR}/images/wr/lib/firmware
 fi