From Bernd Schmidt <bernd.schmidt@analog.com>

	From  Bernd Schmidt  <bernd.schmidt@analog.com>
	* config/gas/bfin-parse.y (asm_1): Clean up and unify error handling
	for load and store insns.
	(neg_value): Delete function.

	testsuite/
	From  Bernd Schmidt  <bernd.schmidt@analog.com>
	* gas/bfin/expected_errors.l, gas/bfin/expected_errors.s:
	Check error messages for invalid load/store insns.