Remove deprecated UNUSED macro (1/5)

Generated automatically with coccinelle

/* This rule matches functions with arguments
 * that have an UNUSED(arg) in the body.
 */
@r1@
identifier arg;
identifier fn;
type t;
parameter list[n] P;
@@

fn(P, const t arg) { ...
 UNUSED(arg);
 ...
 }

/* This rule removes the UNUSED line, and adds
 * UNUSED_ATTR to the parameter list.
 */
@depends on r1@
identifier r1.arg;
identifier r1.fn;
type r1.t;
parameter list[r1.n] r1.P;
typedef UNUSED_ATTR;
@@

fn(P,
- const t arg
+ UNUSED_ATTR GETRIDOFTHISCOMMA, const t arg
 ) { ...
-UNUSED(arg);
 ...
 }

Test: mma -j32

Change-Id: Idcaadd688d669d484e557becd050e69454508f3c