[powerpc] [testsuite] reorder dg directives [PR106069]

The dg-do directive appears after dg-require-effective-target in
g++.target/powerpc/pr106069.C.  That doesn't work the way that was
presumably intended.  Both of these directives set dg-do-what, but
dg-do does so fully and unconditionally, overriding any decisions
recorded there by earlier directives.  Reorder the directives more
canonically, so that both take effect.


for  gcc/testsuite/ChangeLog

	PR target/106069
	* g++.target/powerpc/pr106069.C: Reorder dg directives.

(cherry picked from commit ad65caa332bc7600caff6b9b5b29175b40d91e67)

gcc/testsuite/g++.target/powerpc/pr106069.C

@@ -1,6 +1,6 @@
+/* { dg-do run } */
 /* { dg-options "-O -fno-tree-forwprop -maltivec" } */
 /* { dg-require-effective-target vmx_hw } */
-/* { dg-do run } */
 
 typedef __attribute__ ((altivec (vector__))) unsigned native_simd_type;