[binutils-gdb] Use unsuspend_all_lwps

[sergiodj+buildbot at sergiodj dot net]

*** TEST RESULTS FOR COMMIT fcdad592cd1f76046c5e4b7a2b0337e146d1e796 ***

Author: Yao Qi <yao.qi@linaro.org>
Branch: master
Commit: fcdad592cd1f76046c5e4b7a2b0337e146d1e796

Use unsuspend_all_lwps

This patch is to replace find_inferior (&all_threads, unsuspend_one_lwp, NULL)
with unsuspend_all_lwps (NULL), which is shorter.  They are equivalent
to each other.

gdb/gdbserver:

2016-05-17  Yao Qi  <yao.qi@linaro.org>

	* linux-low.c (linux_stabilize_threads): Call unsuspend_all_lwps
	instead of find_inferior.