Move files around...

- "kernel" and "repos.nix" --> "common/"
- "firmware/surface-go/ath10k" --> "surface-go/firmware/ath10k"
- Update where "kernel", "firmware/surface-go" and "repos.nix" can be found

microsoft/surface/common/repos.nix

@@ -0,0 +1,32 @@
+{ fetchFromGitHub }:
+
+{
+  linux-surface = fetchFromGitHub {
+    owner = "linux-surface";
+    repo = "linux-surface";
+    rev = "8995c6b3b4fb659397f4ebc760c6ac8b5efc5488";
+    sha256 = "sha256-r7nbW0WKmvw7mMZL1BzuFwgwftyN5FIfP5xLDiQMEiI=";
+  };
+
+  # This is the owner and repo for the pre-patched kernel from the "linux-surface" project:
+  linux-surface-kernel = { rev, sha256 }:
+    fetchFromGitHub {
+      owner = "linux-surface";
+      repo = "kernel";
+      inherit rev sha256;
+    };
+
+  ath10k-firmware = fetchFromGitHub {
+    owner = "kvalo";
+    repo = "ath10k-firmware";
+    rev = "c987e38cbdb90dcb4e477d5dd21de66c77996435";
+    sha256 = "16a67baxlga8vb43zbby2s7kpp4488vczg3manmr9g3wxnhhb9n3";
+  };
+
+  surface-go-ath10k-firmware_backup = fetchFromGitHub {
+    owner = "mexisme";
+    repo = "linux-surface_ath10k-firmware";
+    rev = "74e5409e699383d6ca2bc4da4a8433d16f3850b1";
+    sha256 = "169vgvxpgad9anmchs22fj5qm6ahzjfdnwhd8pc280q705vx6pjk";
+  };
+}