ART: change art-tools be host-only

Changes art-tools make target to require host modules. Device
equivalents are now build by art/build/apex/Android.bp.

Bug: 128990084
Test: m art-tools
Change-Id: Iacb61c75b31422566a197839a5c9efa2d5ac0656
diff --git a/build/apex/Android.bp b/build/apex/Android.bp
index 0ff1cbd..7192825 100644
--- a/build/apex/Android.bp
+++ b/build/apex/Android.bp
@@ -69,14 +69,14 @@
     "apex_icu.dat",
 ]
 
-// Modules listed in LOCAL_REQUIRED_MODULES for module art-tools in art/Android.mk.
+// Tools common to both device APEX and host APEX. Derived from art-tools in art/Android.mk.
 art_tools_common_binaries = [
     "dexdiag",
     "dexdump",
     "dexlist",
 ]
 
-// Device-only modules listed in LOCAL_REQUIRED_MODULES for module art-tools in art/Android.mk.
+// Tools exclusively for the device APEX derived from art-tools in art/Android.mk.
 art_tools_device_only_binaries = [
     // oatdump cannot link with host linux_bionic due to not using clang lld;
     // TODO: Make it work with clang lld.
@@ -89,7 +89,7 @@
     "oatdumpd",
 ]
 
-// Host-only modules listed in LOCAL_REQUIRED_MODULES for module art-tools in art/Android.mk.
+// Tools exclusively for the host APEX derived from art-tools in art/Android.mk.
 art_tools_host_only_binaries = [
     // FIXME: Does not work as-is, because `ahat` is defined in tools/ahat/Android.mk
     // (same issue as for `libart_fake` above).