[compiler-rt] support armv5t, armv6

[stuij]

Summary

The legwork for these was done by https://reviews.llvm.org/D138725. Here we're
just adding the arch names to the cmake files and linking them to
arm_min_SOURCES.

[peter.smith]

Looks good to me too.

compiler-rt/cmake/builtin-config-ix.cmake

 
 builtin_check_c_compiler_source(COMPILER_RT_HAS_ASM_LSE
 "
 asm(\".arch armv8-a+lse\");
 asm(\"cas w0, w1, [x2]\");
 ")
 
 set(ARM64 aarch64)
-set(ARM32 arm armhf armv4t armv6m armv7m armv7em armv7 armv7s armv7k armv8m.main armv8.1m.main)
+set(ARM32 arm armhf armv4t armv5te armv6 armv6m armv7m armv7em armv7 armv7s armv7k armv8m.main armv8.1m.main)
 set(AVR avr)
 set(HEXAGON hexagon)
 set(X86 i386)
 set(X86_64 x86_64)
 set(LOONGARCH64 loongarch64)
 set(MIPS32 mips mipsel)
 set(MIPS64 mips64 mips64el)
 set(PPC32 powerpc powerpcspe)

compiler-rt/lib/builtins/CMakeLists.txt

 if (MINGW)
   set(aarch64_SOURCES
     ${aarch64_SOURCES}
     aarch64/chkstk.S
   )
 endif()
 
 set(armv4t_SOURCES ${arm_min_SOURCES})
+set(armv5te_SOURCES ${arm_min_SOURCES})
+set(armv6_SOURCES ${arm_min_SOURCES})
 set(armhf_SOURCES ${arm_SOURCES})
 set(armv7_SOURCES ${arm_SOURCES})
 set(armv7s_SOURCES ${arm_SOURCES})
 set(armv7k_SOURCES ${arm_SOURCES})
 set(arm64_SOURCES ${aarch64_SOURCES})
 set(arm64e_SOURCES ${aarch64_SOURCES})
 set(arm64_32_SOURCES ${aarch64_SOURCES})