[RTEMS] Fix moxie libgcc support

libgcc/

	PR libgcc/70720
	* config.host (moxie-*-rtems*): Merge this stanza with other moxie
	targets so the same extra_parts are built.  Also have tmake_file add
	on to its value rather than override.

From-SVN: r236064

libgcc/ChangeLog

+2016-05-10  Joel Sherrill <joel@rtems.org>
+
+	PR libgcc/70720
+	* config.host (moxie-*-rtems*): Merge this stanza with other moxie
+	targets so the same extra_parts are built.  Also have tmake_file add
+	on to its value rather than override.
+
 2016-04-30  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	* config.host: Remove SH5 support.

libgcc/config.host

@@ -933,14 +933,9 @@ mmix-knuth-mmixware)
 mn10300-*-*)
 	tmake_file=t-fdpbit
 	;;
-moxie-*-elf | moxie-*-moxiebox* | moxie-*-uclinux*)
-	tmake_file="moxie/t-moxie t-softfp-sfdf t-softfp-excl t-softfp"
-	extra_parts="$extra_parts crti.o crtn.o crtbegin.o crtend.o"
-	;;
-moxie-*-rtems*)
+moxie-*-elf | moxie-*-moxiebox* | moxie-*-uclinux* | moxie-*-rtems*)
 	tmake_file="$tmake_file moxie/t-moxie t-softfp-sfdf t-softfp-excl t-softfp"
-	# Don't use default.
-	extra_parts=
+	extra_parts="$extra_parts crti.o crtn.o crtbegin.o crtend.o"
 	;;
 msp430*-*-elf)
 	tmake_file="$tm_file t-crtstuff t-fdpbit msp430/t-msp430"