Add s390x for rtsan support

Author: anoopkg6

compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake

@@ -36,7 +36,7 @@ set(ALL_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
     ${LOONGARCH64})
 set(ALL_ASAN_ABI_SUPPORTED_ARCH ${X86_64} ${ARM64} ${ARM64_32})
 set(ALL_DFSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${LOONGARCH64})
-set(ALL_RTSAN_SUPPORTED_ARCH ${X86_64} ${ARM64})
+set(ALL_RTSAN_SUPPORTED_ARCH ${X86_64} ${ARM64}  ${S390X})
 
 if(ANDROID)
   set(OS_NAME "Android")