Refine the comment.

The host tools include script as well as native binaries.

Change-Id: I8bdd62bf5117ac71e2607d2cb4cd7b08bcbe7b14
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index d8fbc92..909a2fc 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -51,7 +51,7 @@
 	CubeLiveWallpapers \
 	QuickSearchBox
 
-# Native host tools that are parts of the SDK.
+# Host tools that are parts of the SDK.
 # See development/build/sdk.atree
 PRODUCT_PACKAGES += \
 	adb \