all: Add *FORMAT-OFF* in various places.

This string is recognised by uncrustify, to disable formatting in the
region marked by these comments.  This is necessary in the qstrdef*.h files
to prevent modification of the strings within the Q(...).  In other places
it is used to prevent excessive reformatting that would make the code less
readable.

ports/powerpc/qstrdefsport.h

@@ -1 +1,2 @@
 // qstrs specific to this port
+// *FORMAT-OFF*