testsuite: Skip powerpc tests on AIX.

AIX does not support -mstrict-align.

pr109566.c had skip directive in wrong order for DejaGNU.

	* gcc.target/powerpc/pr100106-sa.c: Skip on AIX.
	* gcc.target/powerpc/pr109566.c: Skip on AIX.

Signed-off-by: David Edelsohn <dje.gcc@gmail.com>

gcc/testsuite/gcc.target/powerpc/pr100106-sa.c

@@ -1,5 +1,6 @@
 /* Require ilp32 because -mcpu=604 won't do 64 bits.  */
 /* { dg-do compile { target { ilp32 } } } */
+/* { dg-skip-if "No strict-align for AIX" { powerpc-ibm-aix* } } */
 /* { dg-options "-mcpu=604 -O -mstrict-align" } */
 
 union a {

gcc/testsuite/gcc.target/powerpc/pr109566.c

@@ -1,8 +1,8 @@
 /* PR target/109566 */
 /* Skip this on aix, otherwise it emits the error message like "64-bit
    computation with 32-bit addressing not yet supported" on aix.  */
-/* { dg-skip-if "" { powerpc*-*-aix* } } */
 /* { dg-do compile } */
+/* { dg-skip-if "" { powerpc*-ibm-aix* } } */
 /* { dg-options "-O2 -mpowerpc64" } */
 
 void