rs6000: Fix __powikf2 and __abskf2 spelling

Both of these libfuncs had a "tkf" misspelling, which caused
gcc.target/powerpc/pr85456.c to fail (there is no test for __abskf2).


	* config/rs6000/rs6000.c (init_float128_ieee): Fix spelling mistakes
	in __abskf2 and __powikf2.

From-SVN: r259622

gcc/ChangeLog

+2018-04-24  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* config/rs6000/rs6000.c (init_float128_ieee): Fix spelling mistakes
+	in __abskf2 and __powikf2.
+
 2018-04-24  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	PR target/85512

gcc/config/rs6000/rs6000.c

@@ -18656,8 +18656,8 @@ init_float128_ieee (machine_mode mode)
       set_optab_libfunc (smul_optab, mode, "__mulkf3");
       set_optab_libfunc (sdiv_optab, mode, "__divkf3");
       set_optab_libfunc (sqrt_optab, mode, "__sqrtkf2");
-      set_optab_libfunc (abs_optab, mode, "__abstkf2");
-      set_optab_libfunc (powi_optab, mode, "__powitkf2");
+      set_optab_libfunc (abs_optab, mode, "__abskf2");
+      set_optab_libfunc (powi_optab, mode, "__powikf2");
 
       set_optab_libfunc (eq_optab, mode, "__eqkf2");
       set_optab_libfunc (ne_optab, mode, "__nekf2");