linuxPackages.acpi_call: use kernel makeFlags

This allows the module to build for clang-built kernels

pkgs/os-specific/linux/acpi-call/default.nix

···
 
   nativeBuildInputs = kernel.moduleBuildDependencies;
 
-  makeFlags = [
+  makeFlags = kernel.makeFlags ++ [
     "KDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
   ];