udeb: Make DAC960 and cciss optional in scsi-modules again

They are only built on some architectures, but armhf and arm64 #include
this file so currently FTBFS.

debian/changelog

@@ -1,3 +1,10 @@
+linux (4.4.2-2) UNRELEASED; urgency=medium
+
+  * udeb: Make DAC960 and cciss optional in scsi-modules again
+    (fixes FTBFS on armhf, arm64)
+
+ -- Ben Hutchings <ben@decadent.org.uk>  Thu, 18 Feb 2016 16:43:30 +0000
+
 linux (4.4.2-1) unstable; urgency=medium
 
   * New upstream stable update:

debian/installer/modules/scsi-modules

@@ -1,7 +1,7 @@
 # Include SCSI controller drivers by default
 drivers/scsi/**
-DAC960
-cciss
+DAC960 ?
+cciss ?
 mptfc
 mptsas
 mptspi