[compiler-rt] allow building with uefi

Author: RossComputerGuy

compiler-rt/lib/builtins/int_lib.h

@@ -49,7 +49,7 @@
 #define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name
 
 #if defined(__ELF__) || defined(__MINGW32__) || defined(__wasm__) ||           \
-    defined(_AIX)    || defined(__CYGWIN__)
+    defined(_AIX) || defined(__CYGWIN__) || defined(__UEFI__)
 #define COMPILER_RT_ALIAS(name, aliasname) \
   COMPILER_RT_ABI __typeof(name) aliasname __attribute__((__alias__(#name)));
 #elif defined(__APPLE__)