[patch, testsuite] Use Alternative version of lns-common-1 test for AVR port

[Sivanupandi, Pitchumani]

Hi,

AVR target doesn't disable/ undef DWARF2_USE_FIXED_ADVANCE_PC; It generates
DW_LNS_fixed_advance_pc opcodes for line number information by default. So,
AVR target shall expect alternate output file for lns-common-1 test (lns.exp).

This patch adds avr target to the list of targets that expect alternate
output for test lns-common-1.

If Ok, Could someone commit please? I do not have commit access.

Regards,
Pitchumani

gas/ChangeLog
2016-04-29  Pitchumani Sivanupandi  <pitchumani.s@atmel.com>

	* testsuite/gas/lns/lns.exp: Add avr to list of targets using
	DW_LNS_fixed_advance_pc.

diff --git a/gas/testsuite/gas/lns/lns.exp b/gas/testsuite/gas/lns/lns.exp
index b17e644..567db67 100644
--- a/gas/testsuite/gas/lns/lns.exp
+++ b/gas/testsuite/gas/lns/lns.exp
@@ -33,6 +33,7 @@ if {
 } {
     # Use alternate file for targets using DW_LNS_fixed_advance_pc opcodes.
     if {    [istarget am3*-*-*]
+        || [istarget avr*-*-*]
         || [istarget cr16-*-*]
         || [istarget crx-*-*]
         || [istarget mn10*-*-*]