Upstream: Use CONFIG_BSD instead of _BSD and HOST_BSD

Also fix OS X build, which failed with a link error.
Change-Id: Idd63f25dc1f46ea66da5727c7577def34f048c3c
diff --git a/gdb-xml/power-fpu.xml b/gdb-xml/power-fpu.xml
index d1ca3a3..3870551 100644
--- a/gdb-xml/power-fpu.xml
+++ b/gdb-xml/power-fpu.xml
@@ -7,7 +7,7 @@
 
 <!DOCTYPE feature SYSTEM "gdb-target.dtd">
 <feature name="org.gnu.gdb.power.fpu">
-  <reg name="f0" bitsize="64" type="ieee_double"/>
+  <reg name="f0" bitsize="64" type="ieee_double" regnum="71"/>
   <reg name="f1" bitsize="64" type="ieee_double"/>
   <reg name="f2" bitsize="64" type="ieee_double"/>
   <reg name="f3" bitsize="64" type="ieee_double"/>