linux-atomic.c (__kernel_cmpxchg): Change argument 1 to volatile void *.

linux-atomic.c (__kernel_cmpxchg): Change argument 1 to volatile void *.

	* config/pa/linux-atomic.c (__kernel_cmpxchg): Change argument 1 to
	volatile void *.  Remove trap check.
	(__kernel_cmpxchg2): Likewise.
	(FETCH_AND_OP_2): Adjust operand types.
	(OP_AND_FETCH_2): Likewise.
	(FETCH_AND_OP_WORD): Likewise.
	(OP_AND_FETCH_WORD): Likewise.
	(COMPARE_AND_SWAP_2): Likewise.
	(__sync_val_compare_and_swap_4): Likewise.
	(__sync_bool_compare_and_swap_4): Likewise.
	(SYNC_LOCK_TEST_AND_SET_2): Likewise.
	(__sync_lock_test_and_set_4): Likewise.
	(SYNC_LOCK_RELEASE_1): Likewise.  Use __kernel_cmpxchg2 for release.
	(__sync_lock_release_4): Adjust operand types.  Use __kernel_cmpxchg
	for release.
	(__sync_lock_release_8): Remove.

From-SVN: r278378