[Clang] Add -no-opaque-pointers to more tests (NFC)

clang/test/CodeGen/PowerPC/ppc-emmintrin.c

clang/test/CodeGen/PowerPC/ppc-mmintrin.c

clang/test/CodeGen/PowerPC/ppc-pmmintrin.c

clang/test/CodeGen/PowerPC/ppc-smmintrin.c

clang/test/CodeGen/PowerPC/ppc-tmmintrin.c

clang/test/CodeGen/PowerPC/ppc-x86gprintrin.c

clang/test/CodeGen/PowerPC/ppc-xmmintrin.c

...g/test/CodeGen/PowerPC/vector-compat-pixel-bool-ternary.c

clang/test/CodeGen/PowerPC/vector-compat-pixel-bool.c

clang/test/CodeGen/PowerPC/vector-compat-ternary.c

clang/test/CodeGen/PowerPC/vector-compat.c

clang/test/CodeGen/extern-inline.c

clang/test/CodeGen/ffp-contract-option.c

clang/test/CodeGen/ffp-model.c

clang/test/CodeGen/lifetime-sanitizer.c

clang/test/CodeGen/sancov-new-pm.c

clang/test/CodeGenCUDA/amdgpu-alias-undef-symbols.cu

clang/test/CodeGenCUDASPIRV/kernel-argument.cu

clang/test/CodeGenCXX/cxx-apple-kext.cpp

clang/test/CodeGenCXX/debug-info-nrvo.cpp