Linux: Fix embree unbundling on aarch64

Embree supports aarch64 since version 3.13.0.

(cherry picked from commit 752ed768fa00841a5b7be8592fd34f4c283802c5)

platform/x11/detect.py

@@ -310,10 +310,8 @@ def configure(env):
     if not env["builtin_pcre2"]:
         env.ParseConfig("pkg-config libpcre2-32 --cflags --libs")
 
-    # Embree is only compatible with x86_64. Yet another unreliable hack that will break
-    # cross-compilation, this will really need to be handle better. Thankfully only affects
-    # people who disable builtin_embree (likely distro packagers).
-    if env["tools"] and not env["builtin_embree"] and (is64 and platform.machine() == "x86_64"):
+    # Embree is only used in tools build on x86_64 and aarch64.
+    if env["tools"] and not env["builtin_embree"] and is64:
         # No pkgconfig file so far, hardcode expected lib name.
         env.Append(LIBS=["embree3"])