Fix keylayouts to use BACK instead of incorrect BUTTON_BACK.

Fix duplicate keys in a couple of the onza controllers.  Also, add them to the
Makefile so they actually get included in the build.

Bug: 8292749
Change-Id: I8246155f84d0c3c75b21e37fb579227fda76e197
diff --git a/data/keyboards/Vendor_1bad_Product_f027.kl b/data/keyboards/Vendor_1bad_Product_f027.kl
index ea0aa7a..216e3da 100644
--- a/data/keyboards/Vendor_1bad_Product_f027.kl
+++ b/data/keyboards/Vendor_1bad_Product_f027.kl
@@ -21,8 +21,8 @@
 key 310 BUTTON_L1
 key 311 BUTTON_R1
 key 315 BUTTON_START
-key 314 BUTTON_BACK
-key 316 BUTTON_HOME
+key 314 BACK
+key 316 HOME
 key 317 BUTTON_THUMBL
 key 318 BUTTON_THUMBR