Disable the compile option 'mlong-calls' for Android for IA

This is because this option is a ARM-only option. See the documentation here: 
http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html 

BUG=127379
TEST=

Review URL: https://chromiumcodereview.appspot.com/10382082

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@136247 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/build/common.gypi b/build/common.gypi
index 8e18331c..47e937d 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1888,7 +1888,7 @@
             'target_conditions' : [
               ['_toolset=="target"', {
                 'conditions': [
-                  ['OS=="android" and debug_optimize==0', {
+                  ['OS=="android" and debug_optimize==0 and target_arch=="arm"', {
                     'cflags': [
                       '-mlong-calls',  # Needed when compiling with -O0
                     ],