Move *-le.abilist to le/*.abilist

Now that powerpc is using separate sysdep dirs for BE vs LE ABI, there is
no need for abilist-pattern any more.

ChangeLog

@@ -1,3 +1,11 @@
+2018-12-10  Andreas Schwab  <schwab@suse.de>
+
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/*-le.abilist: Move to
+	sysdeps/unix/sysv/linux/powerpc/powerpc64/le/*.abilist.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/*.abilist: Move to
+	sysdeps/unix/sysv/linux/powerpc/powerpc64/be/*.abilist.
+	* sysdeps/powerpc/Makefile (abilist-pattern): Don't define.
+
 2018-12-10  Joseph Myers  <joseph@codesourcery.com>
 
 	* timezone/private.h: Update from tzcode 2018g.

sysdeps/powerpc/Makefile

@@ -46,7 +46,3 @@ sysdep_headers += sys/platform/ppc.h
 tests += test-gettimebase
 tests += tst-set_ppr
 endif
-
-ifneq (,$(filter %le,$(config-machine)))
-abilist-pattern = %-le.abilist
-endif