x86: don't mistakenly scale non-8-bit displacements

x86: don't mistakenly scale non-8-bit displacements

In commit b5014f7af2 I've removed (instead of replaced) a conditional,
resulting in addressing forms not allowing 8-bit displacements to now
get their displacements scaled under certain circumstances. Re-add the
missing conditional.

2018-07-30  Jan Beulich  <jbeulich@suse.com>

	PR gas/23465
	* config/tc-i386.c (output_disp): Restrict scaling.
	* testsuite/gas/i386/evex-no-scale.s,
	  testsuite/gas/i386/evex-no-scale-32.d
	  testsuite/gas/i386/evex-no-scale-64.d: New.
	* testsuite/gas/i386/i386.exp: Run new tests.

(cherry picked from commit 629cfaf1b0fbb32a985607c774bd8e7870b9fa94)