Add CleanSpec.mk entries for linux -> linux_glibc

Soong renamed intermediate directories from linux_(common|x86|x86_64)...
to linux_glibc_(common|x86|x86_64)..., so remove the old versions to
save space.

Test: Check for old intermediates after applying and running cleanspec
Change-Id: I73ff39014491826224535e1d45c2215669fd19a2
diff --git a/CleanSpec.mk b/CleanSpec.mk
index 63d6f66..76711f2 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -432,6 +432,10 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/sbin/adbd)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/symbols/sbin/adbd)
 
+# Soong linux -> linux_glibc rename
+$(call add-clean-step, find $(SOONG_OUT_DIR)/.intermediates -name 'linux_x86*' | xargs rm -rf)
+$(call add-clean-step, find $(SOONG_OUT_DIR)/.intermediates -name 'linux_common*' | xargs rm -rf)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************