find7a: Rename init scripts to match 7a

Eventually we may rename these to create a common build, but let's
stick with 7a for now

Change-Id: I1a7cba3809469a433763736473597fea404c5903
diff --git a/configs/init.find7.bt.sh b/configs/init.find7a.bt.sh
similarity index 100%
rename from configs/init.find7.bt.sh
rename to configs/init.find7a.bt.sh
diff --git a/configs/init.find7.usb.rc b/configs/init.find7a.usb.rc
similarity index 100%
rename from configs/init.find7.usb.rc
rename to configs/init.find7a.usb.rc