[testsuite] [powerpc] adjust -m32 counts for fold-vec-extract*

[testsuite] [powerpc] adjust -m32 counts for fold-vec-extract*

Codegen changes caused add instruction count mismatches on
ppc-*-linux-gnu and other 32-bit ppc targets.  At some point the
expected counts were adjusted for lp64, but ilp32 differences
remained, and published test results confirm it.

for  gcc/testsuite/ChangeLog

	PR testsuite/101169
	* gcc.target/powerpc/fold-vec-extract-double.p7.c: Adjust addi
	counts for ilp32.
	* gcc.target/powerpc/fold-vec-extract-float.p7.c: Likewise.
	* gcc.target/powerpc/fold-vec-extract-float.p8.c: Likewise.
	* gcc.target/powerpc/fold-vec-extract-int.p7.c: Likewise.
	* gcc.target/powerpc/fold-vec-extract-int.p8.c: Likewise.
	* gcc.target/powerpc/fold-vec-extract-short.p7.c: Likewise.
	* gcc.target/powerpc/fold-vec-extract-short.p8.c: Likewise.