Bump rocket, make possible to use published deps (#47)

* Use published rocketchip

* Simulator works!

* Gitignore was masking csrc

* Fix broken submodules

* Update gitignore

* Fix things up

* Some more cleanup

* Clean up so that using maven works

* Incorporate feedback

* Oops

* Add workaround for some of csrc

* Forgot dtm and jtag

* Make name better and add comment

* Extraneous comment

* Fix includes.

After running a clean build, I realized old build state was masking this
problem. verisim/csrc needs to be in the include path until we find a more
permanent solution to our problem.

* Add target to generate verilator-specific files.

* Ignore DS_Store

* Generate bootrom from testchipip

* Oops

* Add extraneous rocket-dsptools reference

src/main/scala/example/Configs.scala

@@ -10,7 +10,7 @@ import testchipip._
 
 class WithBootROM extends Config((site, here, up) => {
   case BootROMParams => BootROMParams(
-    contentFileName = s"./testchipip/bootrom/bootrom.rv${site(XLen)}.img")
+    contentFileName = s"./bootrom/bootrom.rv${site(XLen)}.img")
 })
 
 object ConfigValName {