Failures on Ubuntu-Aarch64-native-gdbserver-m64, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	ubuntu16-aarch64

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Ubuntu-Aarch64-native-gdbserver-m64/builds/4402>

Commit(s) tested:
	3399f1b3030c3419859f1230bc66a981154d176d

Author(s) (in the same order as the commits):
	Jim Wilson <jimw@sifive.com>

Subject:
	RISC-V: NaN-box FP values smaller than an FP register.

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Ubuntu-Aarch64-native-gdbserver-m64/33/3399f1b3030c3419859f1230bc66a981154d176d/>