add solenv to Module_cross_toolset.mk too

It's already in tail_build, so hopefully the dependencies are fine.

Change-Id: Id2b2474c76895bd25dd34208654d924ad1c4be66

Makefile.in

@@ -280,10 +280,7 @@ endif
 build-nocheck : export SKIP_TESTS := YES
 build-nocheck : build
 
-# Ideally solenv would be also in Module_cross_toolset.mk
-# but one would need to chase and add missing dependencies.
 cross-toolset: bootstrap fetch
-	$(GNUMAKE) gb_Side=build solenv
 	$(GNUMAKE) -j $(PARALLELISM) $(GMAKE_OPTIONS) -f $(SRCDIR)/Makefile.cross
 
 #

Module_cross_toolset.mk

@@ -62,6 +62,7 @@ $(eval $(call gb_Module_add_moduledirs,cross_toolset,\
 	sax \
 	setup_native \
 	shell \
+	solenv \
 	soltools \
 	stoc \
 	store \