[rtsan] Restrict arches and disable android (#98268)

Follow on to #92460 (reporting old android builds failing) and #98264
(powerpc failing to discover gtests).

Getting back to stability by getting back down to a very basic set of
supported arches and OS's. In the future if there is demand we can build
it back up. Especially when I understand how to test these systems, or
have people who want to do the work on them.

---------

Co-authored-by: David Trevelyan <david.trevelyan@gmail.com>

compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake

@@ -32,9 +32,7 @@ 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} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
-#    ${MIPS32} ${MIPS64} ${PPC64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON}
-#    ${LOONGARCH64})
+set(ALL_RTSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64})
 
 if(ANDROID)
   set(OS_NAME "Android")

compiler-rt/cmake/config-ix.cmake

@@ -752,7 +752,7 @@ else()
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON AND RTSAN_SUPPORTED_ARCH AND
-    OS_NAME MATCHES "Android|Darwin|Linux")
+    OS_NAME MATCHES "Darwin|Linux")
   set(COMPILER_RT_HAS_RTSAN TRUE)
 else()
   set(COMPILER_RT_HAS_RTSAN FALSE)