bumblebee: fix build with GCC 10

Patch from bumblebee develop branch:
https://github.com/Bumblebee-Project/Bumblebee/pull/1071

pkgs/tools/X11/bumblebee/default.nix

···
     url = "https://github.com/Bumblebee-Project/Bumblebee/commit/deceb14cdf2c90ff64ebd1010a674305464587da.patch";
     sha256 = "00c05i5lxz7vdbv445ncxac490vbl5g9w3vy3gd71qw1f0si8vwh";
   };
+  gcc10Patch = fetchpatch {
+    url = "https://github.com/Bumblebee-Project/Bumblebee/commit/f94a118a88cd76e2dbea33d735bd53cf54b486a1.patch";
+    hash = "sha256-3b5tLoMrGYSdg9Hz5bh0c44VIrbSZrY56JpWEyU/Pik=";
+  };
 
 in stdenv.mkDerivation rec {
   pname = "bumblebee";
···
 
     modprobePatch
     libkmodPatch
+    gcc10Patch
   ];
 
   # By default we don't want to use a display device
···
     license = licenses.gpl3;
     maintainers = with maintainers; [ abbradar ];
     platforms = platforms.linux;
-    # linking fails with multiple error of type:
-    # multiple definition of `bb_pm_method_string'; src/module.o:(.bss+0x0): first defined here
-    broken = true; # Added 03-08-2022
   };
 }