Add as the erl_xcomp_sysroot for apple silicon

Author: ashea-code

scripts/build_otp.sh

@@ -80,6 +80,7 @@ if [ ! -d otp_src_${version} ]; then
     export CC="$CC -target arm64-apple-macos11"
     export OTP_BUILD_FLAGS="$OTP_BUILD_FLAGS --host=arm64-apple-darwin --build=x86_64-apple-darwin"
     export arch="darwin-arm64"
+    export erl_xcomp_sysroot="$OpenSSL_DIR"
   fi
 
   # do the real OTP build