[RS6000] Unsupported test options for -m32

[Alan Modra]

FAIL: gcc.target/powerpc/swaps-p8-22.c (test for excess errors)
Excess errors:
cc1: error: '-mcmodel' not supported in this configuration

	* gcc.target/powerpc/swaps-p8-22.c: Disable for -m32.

diff --git a/gcc/testsuite/gcc.target/powerpc/swaps-p8-22.c b/gcc/testsuite/gcc.target/powerpc/swaps-p8-22.c
index 83f6ab3a1c0..bceada41b75 100644
--- a/gcc/testsuite/gcc.target/powerpc/swaps-p8-22.c
+++ b/gcc/testsuite/gcc.target/powerpc/swaps-p8-22.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-require-effective-target { lp64 && powerpc_p8vector_ok } } */
 /* { dg-options "-O2 -mdejagnu-cpu=power8 -maltivec -mcmodel=large" } */
 
 /* The expansion for vector character multiply introduces a vperm operation.

-- 
Alan Modra
Australia Development Lab, IBM