rocketchip: Bundle-slices need access to the outer LazyModule

We need this change in order for some ports to use parameters that result
from LazyModule diplomacy.

Now you can eat your cake too!

src/main/scala/rocketchip/BaseTop.scala

@@ -67,11 +67,13 @@ abstract class BaseTop(q: Parameters) extends LazyModule {
   TopModule.contents = Some(this)
 }
 
-abstract class BaseTopBundle(val p: Parameters) extends Bundle {
+abstract class BaseTopBundle[+L <: BaseTop](
+    val p: Parameters,
+    val outer: L) extends Bundle {
   val success = Bool(OUTPUT)
 }
 
-abstract class BaseTopModule[+L <: BaseTop, +B <: BaseTopBundle](
+abstract class BaseTopModule[+L <: BaseTop, +B <: BaseTopBundle[L]](
     val p: Parameters,
     val outer: L,
     val io: B) extends LazyModuleImp(outer) {