Convert WalkPayloadDeps from blueprint.Module to android.Module

All modules in Soong are now android.Module, there is no need to
use blueprint.Module.

Test: builds
Change-Id: I859cd6360732e3d195a634736ec515d240323f29
diff --git a/apex/apex.go b/apex/apex.go
index acf2903..e22cf9e 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2694,7 +2694,7 @@
 		return
 	}
 
-	a.WalkPayloadDeps(ctx, func(ctx android.BaseModuleContext, from blueprint.Module, to android.ApexModule, externalDep bool) bool {
+	a.WalkPayloadDeps(ctx, func(ctx android.BaseModuleContext, from android.Module, to android.ApexModule, externalDep bool) bool {
 		// As soon as the dependency graph crosses the APEX boundary, don't go further.
 		if externalDep {
 			return false